CVE-2026-119203

— UNSCOREDpublic exploit available

Published 2026-10-29 · Updated 2026-10-29

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can enter an infinite loop while opening a crafted incomplete PDF whose standard cross-reference table reaches the end of the file without a trailer. The trailer search can repeatedly rewind to the same stream position instead of terminating when parsing makes no progress, blocking the processing thread. This issue is fixed in version 6.21.4.

Weaknesses

CWE-835

Public exploit & PoC references

https://github.com/py-pdf/pypdf/commit/06593f993789a4b573dd955730c1a7051128bb2a
https://github.com/py-pdf/pypdf/pull/4289
https://github.com/py-pdf/pypdf/releases/tag/6.21.4
https://github.com/py-pdf/pypdf/security/advisories/GHSA-5849-834g-hvw5

All references

https://github.com/py-pdf/pypdf/commit/06593f993789a4b573dd955730c1a7051128bb2a
https://github.com/py-pdf/pypdf/pull/4289
https://github.com/py-pdf/pypdf/releases/tag/6.21.4
https://github.com/py-pdf/pypdf/security/advisories/GHSA-5849-834g-hvw5

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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