CVE-2026-0877
Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
Risk Information
Base Score
8.1
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS Score
Exploitation Probability
0.024
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Multiple vulnerabilities are fixed in Mozilla Firefox (Microsoft Store) 140.7 | Windows |
| Vulnerabilities CVE-2026-0877,CVE-2026-0879,CVE-2026-0880,CVE-2026-0882,CVE-2026-0886 are fixed in Mozilla Firefox (Microsoft Store) 115.32 | Windows |
| Multiple vulnerabilities are fixed in Mozilla Firefox (Microsoft Store) 147 | Windows |
| Multiple vulnerabilities are fixed in Mozilla Firefox ESR (140) (140.7.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Firefox ESR (140) (x64) (140.7.0) | Windows |
| Vulnerabilities CVE-2026-0877,CVE-2026-0879,CVE-2026-0880,CVE-2026-0882,CVE-2026-0886 are fixed in Mozilla Firefox ESR (115) (115.32.0) | Windows |
| Vulnerabilities CVE-2026-0877,CVE-2026-0879,CVE-2026-0880,CVE-2026-0882,CVE-2026-0886 are fixed in Mozilla Firefox ESR (115) (x64) (115.32.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Firefox (147.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Firefox (x64) (147.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Thunderbird ESR 140 (140.7.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Thunderbird ESR 140 (x64) (140.7.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Thunderbird (147.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Thunderbird (x64) (147.0) | Windows |
| Multiple vulnerabilities are fixed in Mozilla Firefox For Mac (147.0) | Mac |
| Multiple vulnerabilities are fixed in Mozilla Firefox For Mac (147.0.1) | Mac |
| Multiple vulnerabilities are fixed in Mozilla Firefox For Mac (147.0.2) | Mac |
| Multiple vulnerabilities are fixed in Mozilla Firefox For Mac (147.0.3) | Mac |
| Multiple vulnerabilities are fixed in Mozilla Firefox For Mac (147.0.4) | Mac |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-354977 | Mozilla Firefox ESR (140) (140.7.0) |
| PATCH-354978 | Mozilla Firefox ESR (140) (x64) (140.7.0) |
| PATCH-354975 | Mozilla Firefox ESR (115) (115.32.0) |
| PATCH-354976 | Mozilla Firefox ESR (115) (x64) (115.32.0) |
| PATCH-354973 | Mozilla Firefox (147.0) |
| PATCH-354974 | Mozilla Firefox (x64) (147.0) |
| PATCH-354981 | Mozilla Thunderbird ESR 140 (140.7.0) |
| PATCH-354982 | Mozilla Thunderbird ESR 140 (x64) (140.7.0) |
| PATCH-354979 | Mozilla Thunderbird (147.0) |
| PATCH-354980 | Mozilla Thunderbird (x64) (147.0) |
| PATCH-613630 | Mozilla Firefox For Mac (147.0.4) |
| PATCH-613630 | Mozilla Firefox For Mac (147.0.4) |
| PATCH-613630 | Mozilla Firefox For Mac (147.0.4) |
| PATCH-613630 | Mozilla Firefox For Mac (147.0.4) |
| PATCH-613630 | Mozilla Firefox For Mac (147.0.4) |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234