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CVE-2026-23918

Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:705c0bcf429a89ac616107ed89f13a746d71760fc3781f9506589fd4824ba203
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 11 assertions

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/7

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/1

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/4

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"mod_http2","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/8

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"httpd:2.4/mod_http2","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/6

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_core_services:1"],"defaultStatus":"unaffected","packageName":"mod_http2","product":"Red Hat JBoss Core Services","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/9

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"httpd-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"2.4.67-0.1.hum1","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"mod_http2","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/2

{"defaultStatus":"unaffected","product":"Apache HTTP Server","vendor":"Apache Software Foundation","versions":[{"status":"affected","version":"2.4.66","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"httpd:2.4/httpd","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/5
cwe · 2 assertions

{"cweId":"CWE-1341","description":"Multiple Releases of Same Resource or Handle","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/problemTypes/0/descriptions/0

{"cweId":"CWE-415","description":"CWE-415 Double Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

11 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"httpd","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/7
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"httpd","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"httpd","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"httpd","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"mod_http2","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/8
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"httpd:2.4/mod_http2","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/6
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_core_services:1"],"defaultStatus":"unaffected","packageName":"mod_http2","product":"Red Hat JBoss Core Services","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/9
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"httpd-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"2.4.67-0.1.hum1","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"mod_http2","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/2
{"defaultStatus":"unaffected","product":"Apache HTTP Server","vendor":"Apache Software Foundation","versions":[{"status":"affected","version":"2.4.66","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"httpd:2.4/httpd","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/affected/5

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/0/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-1341","description":"Multiple Releases of Same Resource or Handle","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/problemTypes/0/descriptions/0
{"cweId":"CWE-415","description":"CWE-415 Double Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/05/04/19"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/1/references/0
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:13938"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/references/3
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-23918"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/references/0
{"name":"RHBZ#2465304","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2465304"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/references/1
{"tags":["vendor-advisory"],"url":"https://httpd.apache.org/security/vulnerabilities_24.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23918.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05933d129245d68392c4689a9b67cf315766be49c26235cfadac90214cfb4241 · sha256:41e9e3d16991798a… · /containers/adp/2/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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