Use-after-free in the XML component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.

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No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mozilla Firefox affected
Version Status Constraints
115.44 unaffected ≤ 115.*
153.6 unaffected ≤ 153.*
159 unaffected ≤ *

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Advisories

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Fixes

Solution

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Workaround

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References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2076705 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-118/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-119/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-120/ cve-icon cve-icon
History

Tue, 27 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Tue, 27 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Description Use-after-free in the XML component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.
Title Use-after-free in the XML component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-27T14:05:45.441Z

Reserved: 2026-10-27T14:05:45.269Z

Link: CVE-2026-117974

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-27T14:16:55.340

Modified: 2026-10-27T15:00:49.240

Link: CVE-2026-117974

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T16:45:05Z

Weaknesses