Adobe Acrobat and Reader Prototype Pollution Vulnerability

Adobe Acrobat and Reader

Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution. Added to CISA KEV on 2026-04-13 (federal deadline 2026-04-27).

First seen: 13 Apr 2026
Last update: 13 Apr 2026, 12:00 UTC
Identifiers: CVE-2026-34621
Source: CISA KEV

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## Adobe Acrobat and Reader Prototype Pollution Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Adobe Acrobat and Reader
Ids: CVE-2026-34621

Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution. Added to CISA KEV on 2026-04-13 (federal deadline 2026-04-27).

## Steps
1. Search the repo, its CI and infra config for Adobe Acrobat and Reader. If present, report the version in use and whether it's affected.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-34621") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://helpx.adobe.com/security/products/acrobat/apsb26-43.html https://nvd.nist.gov/vuln/detail/CVE-2026-34621
https://pwned.coffee/i/adobe-acrobat-and-reader-prototype-pollution-vulnerabili-cve-2026-34621

Sources

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