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CVE-2026-24688
Published: Jan 27, 2026
Modified: Jan 27, 2026
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
py-pdf | pypdf | affected < 6.6.2 |
Weaknesses (CWE)
References
https://github.com/py-pdf/pypdf/security/advisories/GHSA-2q4j-m29v-hq73
x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3610
x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.6.2
x_refsource_MISC
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