# CVE-2026-115572: pypdf: pypdf is a free and open-source pure-python PDF library

CVE-2026-115572 is fixed in pypdf on 1 platform by DEBIAN-CVE-2026-115572 (version 6.21.4-1), released November 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-115572
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0038
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 23, 2026

## Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF that repeatedly references the same nonexistent indirect object, causing relevant file parts such as pages to trigger repeated full-file recovery loads and long runtimes when accessed. This issue is fixed in version 6.21.2.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | pypdf Debian 14 | 6.21.4-1 | [DEBIAN-CVE-2026-115572](https://patchblox.com/security/data/fix/linux/debian-cve-2026-115572.md) | Nov 6, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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