CVE-2026-74948
published 2026-08-18CVE-2026-74948: Information disclosure in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1…
PriorityP432medium6.5CVSS 3.1
AVNACLPRNUIRSUCHINAN
EPSS
0.31%
24.1th percentile
Information disclosure in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 154 | Firefox 154 |
| mozilla | firefox | < 115.39.0 | 115.39.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 116.0 < 140.14.0 | 140.14.0 |
| mozilla | firefox | >= 141.0 < 153.1.0 | 153.1.0 |
| mozilla | firefox_esr | < Firefox ESR 140.14 | Firefox ESR 140.14 |
| mozilla | firefox_esr | < Firefox ESR 153.1 | Firefox ESR 153.1 |
| mozilla | firefox_esr | < Firefox ESR 115.39 | Firefox ESR 115.39 |
| mozilla | thunderbird | < Thunderbird 140.14 | Thunderbird 140.14 |
| mozilla | thunderbird | < Thunderbird 154 | Thunderbird 154 |
| mozilla | thunderbird | < Thunderbird 153.1 | Thunderbird 153.1 |
| mozilla | thunderbird | < 140.14.0 | 140.14.0 |
| mozilla | thunderbird | — | — |
| mozilla | thunderbird | >= 141.0 < 153.1.0 | 153.1.0 |
| 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_redhat7.5HIGH
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VulDB
Mozilla Firefox prior 115.39/140.14/153.1/154 Graphics information disclosure
vuldb·2026-08-23·CVSS 6.5
CVE-2026-74948 [MEDIUM] Mozilla Firefox prior 115.39/140.14/153.1/154 Graphics information disclosure
A vulnerability was found in Mozilla Firefox. It has been classified as problematic. The impacted element is an unknown function of the component Graphics. This manipulation causes information disclosure.
This vulnerability is registered as CVE-2026-74948. Remote exploitation of the attack is possible. No exploit is available.
Upgrading the affected component is recommended.
GHSA
Information disclosure in the Graphics component.
ghsa_unreviewed·2026-08-18
CVE-2026-74948 Information disclosure in the Graphics component.
Information disclosure in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
Red Hat
firefox: thunderbird: Information disclosure in the Graphics component
vendor_redhat·2026-08-18·CVSS 7.5
CVE-2026-74948 [HIGH] CWE-497 firefox: thunderbird: Information disclosure in the Graphics component
firefox: thunderbird: Information disclosure in the Graphics component
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Information disclosure in the Graphics 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) - Affected
Package: thunderbird (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Package: fire
Mozilla
Mozilla Foundation Security Advisory 2026-76: CVE-2026-74948
vendor_mozilla
CVE-2026-74948 Mozilla Foundation Security Advisory 2026-76: CVE-2026-74948
Mozilla Foundation Security Advisory 2026-76
CVE: CVE-2026-74948
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.14
Mozilla
Mozilla Foundation Security Advisory 2026-79: CVE-2026-74948
vendor_mozilla
CVE-2026-74948 Mozilla Foundation Security Advisory 2026-79: CVE-2026-74948
Mozilla Foundation Security Advisory 2026-79
CVE: CVE-2026-74948
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.14
Mozilla
Mozilla Foundation Security Advisory 2026-78: CVE-2026-74948
vendor_mozilla
CVE-2026-74948 Mozilla Foundation Security Advisory 2026-78: CVE-2026-74948
Mozilla Foundation Security Advisory 2026-78
CVE: CVE-2026-74948
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 154
Mozilla
Mozilla Foundation Security Advisory 2026-74: CVE-2026-74948
vendor_mozilla
CVE-2026-74948 Mozilla Foundation Security Advisory 2026-74: CVE-2026-74948
Mozilla Foundation Security Advisory 2026-74
CVE: CVE-2026-74948
Product: Firefox
Impact: high
Fixed in: Firefox 154
Mozilla
Mozilla Foundation Security Advisory 2026-77: CVE-2026-74948
vendor_mozilla
CVE-2026-74948 Mozilla Foundation Security Advisory 2026-77: CVE-2026-74948
Mozilla Foundation Security Advisory 2026-77
CVE: CVE-2026-74948
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 153.1
Mozilla
Mozilla Foundation Security Advisory 2026-80: CVE-2026-74948
vendor_mozilla
CVE-2026-74948 Mozilla Foundation Security Advisory 2026-80: CVE-2026-74948
Mozilla Foundation Security Advisory 2026-80
CVE: CVE-2026-74948
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153.1
Mozilla
Mozilla Foundation Security Advisory 2026-75: CVE-2026-74948
vendor_mozilla
CVE-2026-74948 Mozilla Foundation Security Advisory 2026-75: CVE-2026-74948
Mozilla Foundation Security Advisory 2026-75
CVE: CVE-2026-74948
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 115.39
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=2060106https://www.mozilla.org/security/advisories/mfsa2026-74/https://www.mozilla.org/security/advisories/mfsa2026-75/https://www.mozilla.org/security/advisories/mfsa2026-76/https://www.mozilla.org/security/advisories/mfsa2026-77/https://www.mozilla.org/security/advisories/mfsa2026-78/https://www.mozilla.org/security/advisories/mfsa2026-79/https://www.mozilla.org/security/advisories/mfsa2026-80/
2026-08-18
Published