CVE-2026-0881 (GCVE-0-2026-0881)

Vulnerability from cvelistv5 – Published: 2026-01-13 13:30 – Updated: 2026-01-15 09:31
VLAI?
Title
Sandbox escape in the Messaging System component
Summary
Sandbox escape in the Messaging System component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
Severity ?
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-693 - Protection Mechanism Failure
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Affected: unspecified , < 147 (custom)
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    Mozilla Thunderbird Affected: unspecified , < 147 (custom)
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Credits
Andrew McCreight
Show details on NVD website
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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