What’s Vulnerable › Vulnerabilities

CVE-2026-109769: Information disclosure in the Networking: Cache component

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-13 · updated 2026-10-13
• Weakness: CWE-200

Description

Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2050313
• https://www.mozilla.org/security/advisories/mfsa2026-106/
• https://www.mozilla.org/security/advisories/mfsa2026-109/

Get alerted when CVE-2026-109769 or the next vulnerability affects your stack