Loop with Unreachable Exit Condition ('Infinite Loop') Affecting pypdf package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 Jun 2026
- disclosed22 Jun 2026
Introduced: 22 Jun 2026
CVE-2026-54651 (opens in a new tab)How to fix?
There is no fixed version for Debian:unstable pypdf.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pypdf package and not the pypdf package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer. This vulnerability is fixed in 6.13.1.