CVE-2026-34626

Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

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

Adobe · Acrobat DC · Acrobat Reader DC · Acrobat 2024

CVSS v3.1 ADOBE

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

EPSS

0.58% chance of exploitation in the next 30 days, 47th percentile

Published

2026-04-14

Updated

2026-08-27

Proof-of-concept exploits (1)

• sanchit-saini/acrobat-reader-escape0★ · 2026-05-18

Security advisories

• https://helpx.adobe.com/security/products/acrobat/apsb26-44.html

References

• CVE Record
• NVD entry

Related

• CVE-2026-34621
• CVE-2026-34622