Sigma Watch is free and independent. If it saves you time, keep it running. ☕ Buy me a coffee
SigmaWatch
CVE coverage

CVE-2026-100779

CVSS 8.8 no coverage
View on NVD →
Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Detection rules

No detection found — yet
None of Sigma, Elastic, Splunk ESCU, YARA, Microsoft Sentinel, Snort, or Suricata currently has a rule referencing CVE-2026-100779.