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CVE-2026-34774

A flaw was found in Electron. This use-after-free vulnerability occurs in applications that utilize offscreen rendering and permit child windows. When the parent offscreen WebContents is destroyed while a child window remains active, subsequent rendering attempts on the child can access freed memory. This can lead to a crash or memory corruption within the application.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7674e184854bb7407753af2b51dfaada322edfb5b8917cda75058dec7ba6cb06
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"product":"electron","vendor":"electron","versions":[{"status":"affected","version":"< 39.8.1"},{"status":"affected","version":">= 40.0.0-alpha.1, < 40.7.0"},{"status":"affected","version":">= 41.0.0-alpha.1, < 41.0.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:0"],"defaultStatus":"affected","packageName":"rhdesktop/rh-podman-desktop-ext-openshift-local-rhel10","product":"Red Hat Build of Podman Desktop - Tech Preview","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"],"defaultStatus":"affected","packageName":"podman-desktop-macos-1-0","product":"Red Hat Build of Podman Desktop","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"],"defaultStatus":"affected","packageName":"podman-desktop-windows-1-0","product":"Red Hat Build of Podman Desktop","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/affected/1
cwe · 2 assertions

{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-825","description":"Expired Pointer Dereference","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

4 source assertions
{"product":"electron","vendor":"electron","versions":[{"status":"affected","version":"< 39.8.1"},{"status":"affected","version":">= 40.0.0-alpha.1, < 40.7.0"},{"status":"affected","version":">= 41.0.0-alpha.1, < 41.0.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:0"],"defaultStatus":"affected","packageName":"rhdesktop/rh-podman-desktop-ext-openshift-local-rhel10","product":"Red Hat Build of Podman Desktop - Tech Preview","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"],"defaultStatus":"affected","packageName":"podman-desktop-macos-1-0","product":"Red Hat Build of Podman Desktop","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"],"defaultStatus":"affected","packageName":"podman-desktop-windows-1-0","product":"Red Hat Build of Podman Desktop","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/affected/1

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/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:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/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:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-825","description":"Expired Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-34774"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/references/0
{"name":"RHBZ#2455026","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455026"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/references/1
{"name":"https://github.com/electron/electron/security/advisories/GHSA-532v-xpq5-8h95","tags":["x_refsource_CONFIRM"],"url":"https://github.com/electron/electron/security/advisories/GHSA-532v-xpq5-8h95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34774.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fd723cee34cf42621b5ae5442dad93362b9d6e5c9640e32cf7c2c843428468b2 · sha256:56d223a2bb93fdd9… · /containers/adp/1/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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