CVE-2026-92031
published 2026-09-15CVE-2026-92031: Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird…
PriorityP432medium6.5CVSS 3.1
AVNACLPRNUIRSUCHINAN
EPSS
0.31%
21.9th percentile
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 156 | Firefox 156 |
| mozilla | firefox | < 140.16.0 | 140.16.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 141.0 < 153.3.0 | 153.3.0 |
| mozilla | firefox | >= 154.0.0 < 156.0.0 | 156.0.0 |
| mozilla | firefox_esr | < Firefox ESR 153.3 | Firefox ESR 153.3 |
| mozilla | firefox_esr | < Firefox ESR 140.16 | Firefox ESR 140.16 |
| mozilla | thunderbird | < Thunderbird 140.16 | Thunderbird 140.16 |
| mozilla | thunderbird | < Thunderbird 156 | Thunderbird 156 |
| mozilla | thunderbird | < Thunderbird 153.3 | Thunderbird 153.3 |
| mozilla | thunderbird | < 140.16.0 | 140.16.0 |
| mozilla | thunderbird | — | — |
| mozilla | thunderbird | >= 141.0 < 153.3.0 | 153.3.0 |
| mozilla | thunderbird | >= 154.0 < 156.0 | 156.0 |
| rhel10 | firefox-flatpak | — | — |
| rhel10 | thunderbird-flatpak | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
vendor_redhat6.1MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Red Hat
firefox: thunderbird: Information disclosure in the Graphics: ImageLib component
vendor_redhat·2026-09-15·CVSS 6.1
CVE-2026-92031 [MEDIUM] CWE-497 firefox: thunderbird: Information disclosure in the Graphics: ImageLib component
firefox: thunderbird: Information disclosure in the Graphics: ImageLib component
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Information disclosure in the Graphics: ImageLib component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affec
Mozilla
Mozilla Foundation Security Advisory 2026-93: CVE-2026-92031
vendor_mozilla
CVE-2026-92031 Mozilla Foundation Security Advisory 2026-93: CVE-2026-92031
Mozilla Foundation Security Advisory 2026-93
CVE: CVE-2026-92031
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.3
Mozilla
Mozilla Foundation Security Advisory 2026-95: CVE-2026-92031
vendor_mozilla
CVE-2026-92031 Mozilla Foundation Security Advisory 2026-95: CVE-2026-92031
Mozilla Foundation Security Advisory 2026-95
CVE: CVE-2026-92031
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 140.16
Mozilla
Mozilla Foundation Security Advisory 2026-92: CVE-2026-92031
vendor_mozilla
CVE-2026-92031 Mozilla Foundation Security Advisory 2026-92: CVE-2026-92031
Mozilla Foundation Security Advisory 2026-92
CVE: CVE-2026-92031
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 140.16
Mozilla
Mozilla Foundation Security Advisory 2026-90: CVE-2026-92031
vendor_mozilla
CVE-2026-92031 Mozilla Foundation Security Advisory 2026-90: CVE-2026-92031
Mozilla Foundation Security Advisory 2026-90
CVE: CVE-2026-92031
Product: Firefox
Impact: low
Fixed in: Firefox 156
Mozilla
Mozilla Foundation Security Advisory 2026-94: CVE-2026-92031
vendor_mozilla
CVE-2026-92031 Mozilla Foundation Security Advisory 2026-94: CVE-2026-92031
Mozilla Foundation Security Advisory 2026-94
CVE: CVE-2026-92031
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 156
Mozilla
Mozilla Foundation Security Advisory 2026-96: CVE-2026-92031
vendor_mozilla
CVE-2026-92031 Mozilla Foundation Security Advisory 2026-96: CVE-2026-92031
Mozilla Foundation Security Advisory 2026-96
CVE: CVE-2026-92031
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.3
VulDB
Mozilla Firefox up to 140.15/153.2/155 ImageLib information disclosure (Nessus ID 350767 / WID-SEC-2026-3375)
vuldb·2026-09-28·CVSS 6.5
CVE-2026-92031 [MEDIUM] Mozilla Firefox up to 140.15/153.2/155 ImageLib information disclosure (Nessus ID 350767 / WID-SEC-2026-3375)
A vulnerability identified as problematic has been detected in Mozilla Firefox up to 140.15/153.2/155. This affects an unknown part of the component ImageLib. Performing a manipulation results in information disclosure.
This vulnerability is known as CVE-2026-92031. Remote exploitation of the attack is possible. No exploit is available.
You should upgrade the affected component.
GHSA
Information disclosure in the Graphics: ImageLib component.
ghsa_unreviewed·2026-09-15
CVE-2026-92031 Information disclosure in the Graphics: ImageLib component.
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3.
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=2067971https://www.mozilla.org/security/advisories/mfsa2026-90/https://www.mozilla.org/security/advisories/mfsa2026-92/https://www.mozilla.org/security/advisories/mfsa2026-93/https://www.mozilla.org/security/advisories/mfsa2026-94/https://www.mozilla.org/security/advisories/mfsa2026-95/https://www.mozilla.org/security/advisories/mfsa2026-96/
2026-09-15
Published