CVE-2026-34626: Adobe Acrobat

Medium severity, CVSS 6.3. EPSS: 0.6% chance of exploitation in the next 30 days.

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products

• Adobe Acrobat: from 24.0.0, before 24.001.30365 (fixed in 24.001.30365)
• Adobe Acrobat DC: from 15.008.20082, before 26.001.21431 (fixed in 26.001.21431)
• Adobe Acrobat Reader DC: from 15.008.20082, before 26.001.21431 (fixed in 26.001.21431)

Published 2026-04-14. Last modified 2026-08-28.