Riskcovery

CVE-2026-8958

Information disclosure, sandbox escape in the Security: Process Sandboxing component

State
Published
Severity
8.6 High
Published
May 19, 2026
Updated
May 19, 2026
Reserved
May 19, 2026

Read the record on cve.org

Description

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Scores

CVSSScoreVectorSource
3.18.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NCISA-ADP

Weaknesses

  • CWE-668 Exposure of Resource to Wrong Sphere
  • CWE-693 Protection Mechanism Failure

Affected Products

ProductVersions
FirefoxMozilla
  • 140.11 through 140.*Not affected
  • 151 and laterNot affected
ThunderbirdMozilla
  • 140.11 through 140.*Not affected
  • 151 and laterNot affected

References

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