Vulnerability record/PUBLISHED/Published Oct 27, 2026 14:05:24 UTC
CVE-2026-117916
Use-after-free in the XSLT component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Base score6.3/ 10
SeverityMediumCVSS 3.1
Exploitability / impact
CVSS metric breakdown
Base severityMedium
Attack vectorNetworkAV
Attack complexityLowAC
Privileges requiredNonePR
User interactionRequiredUI
ScopeUnchangedS
Confidentiality impactLowC
Integrity impactLowI
Availability impactLowA
CVSS vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:LCVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.
Record context
CVE Numbering Authoritymozilla
Last updatedNov 4, 2026 19:47:50 UTC
PublishedOct 27, 2026 14:05:24 UTC
ReservedOct 27, 2026 14:05:24 UTC
Credits
- Mozilla