CVE-2026-100808 Affecting MozillaThunderbird package, versions <153.4.0-150400.13.6.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-SLES157-MOZILLATHUNDERBIRD-20875998
- published13 Oct 2026
- disclosed12 Oct 2026
Introduced: 12 Oct 2026
NewCVE-2026-100808 (opens in a new tab)How to fix?
Upgrade SLES:15.7 MozillaThunderbird to version 153.4.0-150400.13.6.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream MozillaThunderbird package and not the MozillaThunderbird package as distributed by SLES.
See How to fix? for SLES:15.7 relevant fixed versions and status.
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
References
- https://www.suse.com/security/cve/CVE-2026-100808.html
- https://bugzilla.suse.com/1282929
- https://bugzilla.mozilla.org/show_bug.cgi?id=2063488
- https://www.mozilla.org/security/advisories/mfsa2026-100/
- https://www.mozilla.org/security/advisories/mfsa2026-101/
- https://www.mozilla.org/security/advisories/mfsa2026-103/
- https://www.mozilla.org/security/advisories/mfsa2026-97/