CVE-2026-100763 json
Incorrect boundary conditions in the Graphics: WebGPU component
published 2026-09-29 41 d ago modified 2026-10-13 26 d ago also EUVD-2026-88915
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
Summary
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
Patch / fix
- mozilla thunderbird 157
- mozilla thunderbird_esr 157
- mozilla firefox 157
- mozilla firefox_esr 157
- MozillaFirefox openSUSE Tumbleweed 157.0.1-1.1
opensuse advisories openSUSE-SU-2026:12097-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-100763 updated cvss 7.5
firefox: Incorrect boundary conditions in the Graphics: WebGPU component
-
Red Hat Enterprise Linux 6 firefox Red Hat Enterprise Linux 7 firefox Red Hat Enterprise Linux 8 firefox Red Hat Enterprise Linux 9 firefox, firefox-x11 Red Hat Enterprise Linux 10 firefox, rhel10/firefox-flatpaknot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 39 d ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Affected products
- Mozilla Thunderbird
- Mozilla Firefox
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
mozilla.org
/security/advisories/mfsa2026-101/
vendor-advisory
-
mozilla.org
/security/advisories/mfsa2026-97/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=2059929
permissions-required
Sources
- CVE List CVE-2026-100763
- NVD CVE-2026-100763
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.