CVE-2026-74945

Information disclosure in the Graphics: Text component

Information disclosure in the Graphics: Text 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

Mozilla · Firefox · Thunderbird

CVSS v3.1 CNA

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS

0.44% chance of exploitation in the next 30 days, 37th percentile

Published

2026-08-18

Updated

2026-08-21

Proof-of-concept exploits (1)

• defineid/Palimpsest0★ · 2026-08-25

Security advisories

• https://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

References

• CVE Record
• NVD entry

Related

• CVE-2026-6765
• CVE-2026-74943
• CVE-2026-74970