Medium severity · published Apr 14, 2026
CVE-2026-34626
Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
6.3
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A2
Acrobat 2024 · Adobe
through 24.001.30362 (Win), 24.001.30360 (Mac) · source: vendor
AD
Acrobat DC · Adobe
through 26.001.21411 · source: vendor, NVD
AR
Acrobat Reader DC · Adobe
through 26.001.21411 · source: vendor, NVD
AC
Acrobat · Adobe
24.0.0 before 24.001.30365 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34626
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34626
Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb26-44.html
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