pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has been fixed in pypdf 6.6.2. If projects cannot upgrade yet, consider applying the changes from PR #3610 manually.
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History
Tue, 27 Jan 2026 21:15:00 +0000
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Tue, 27 Jan 2026 20:00:00 +0000
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| Description | pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has been fixed in pypdf 6.6.2. If projects cannot upgrade yet, consider applying the changes from PR #3610 manually. | |
| Title | pypdf has possible Infinite Loop when processing outlines/bookmarks | |
| Weaknesses | CWE-835 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-27T20:51:48.030Z
Reserved: 2026-01-23T20:40:23.389Z
Link: CVE-2026-24688
Updated: 2026-01-27T20:35:55.665Z
Status : Received
Published: 2026-01-27T20:16:24.193
Modified: 2026-01-27T20:16:24.193
Link: CVE-2026-24688
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OpenCVE Enrichment
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