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CVE-2026-2799

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f20f2e369057265a799dbd3a0b73a0a9e38679a21a4d46adcd549836bf9e8fe4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 14 assertions

{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThanOrEqual":"*","status":"unaffected","version":"148","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/7

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/8

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/10

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/11

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/9

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/4

{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThanOrEqual":"*","status":"unaffected","version":"148","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/cna/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"rhel10/thunderbird-flatpak","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"rhel10/firefox-flatpak","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/6
cvss · 2 assertions

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/metrics/1/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/0/metrics/0/cvssV3_1

Affected products and versions

14 source assertions
{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThanOrEqual":"*","status":"unaffected","version":"148","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/7
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/8
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/10
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/11
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"thunderbird","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/9
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/4
{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThanOrEqual":"*","status":"unaffected","version":"148","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/cna/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"rhel10/thunderbird-flatpak","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"rhel10/firefox-flatpak","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"firefox","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/affected/6

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-2799"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/references/0
{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2014551"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/cna/references/0
{"name":"RHBZ#2442303","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2442303"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/references/1
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2799.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/adp/1/references/2
{"url":"https://www.mozilla.org/security/advisories/mfsa2026-13/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/cna/references/1
{"url":"https://www.mozilla.org/security/advisories/mfsa2026-16/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ff7ec612f6f7391251448c14e41c28ed0055ef1bf8bf67507f95e568b8f515fa · sha256:57d9e5b12f999d47… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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