VulnerabilityModified
CVE-2026-15719
This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13.
MEDIUM 5.4EPSS 0.34%
Does this matter?
Lower severity and a low EPSS score (0.34%). Track it; it rarely justifies an emergency change on its own.
Description
We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS
- 0.34% probability · 27th percentile
- CISA KEV
- Not listed
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2043820Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-67/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-69/
- https://www.mozilla.org/security/advisories/mfsa2026-70/
- https://www.mozilla.org/security/advisories/mfsa2026-72/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.