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

No CVSS v4.0

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
153.6 unaffected ≤ 153.*
159 unaffected ≤ *

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2079257 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-118/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-120/ cve-icon cve-icon
History

Tue, 27 Oct 2026 16:00:00 +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 XSLT component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
Title Use-after-free in the XSLT component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-27T14:05:24.259Z

Reserved: 2026-10-27T14:05:24.079Z

Link: CVE-2026-117916

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-27T14:16:47.047

Modified: 2026-10-27T15:01:29.847

Link: CVE-2026-117916

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T15:45:04Z

Weaknesses