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Vulnerability DatabaseCVE-2026-0888

CVE-2026-0888: 
Mozilla Firefox vulnerability analysis and mitigation

Information disclosure in the XML component. This vulnerability affects Firefox < 147 and Thunderbird < 147.

Source: NVD

Related Mozilla Firefox vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-0892CRITICAL9.8
  • Mozilla FirefoxMozilla Firefox
  • thunderbird
NoYesJan 13, 2026
CVE-2026-0891HIGH8.1
  • Mozilla FirefoxMozilla Firefox
  • firefox
NoYesJan 13, 2026
CVE-2026-0889HIGH7.5
  • Mozilla FirefoxMozilla Firefox
  • thunderbird
NoYesJan 13, 2026
CVE-2026-0890MEDIUM5.4
  • Mozilla FirefoxMozilla Firefox
  • cpe:2.3:a:mozilla:firefox_esr
NoYesJan 13, 2026
CVE-2026-0888MEDIUM5.3
  • Mozilla FirefoxMozilla Firefox
  • cpe:2.3:a:mozilla:thunderbird
NoYesJan 13, 2026

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