CVE-2026-27628

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.

PUBLISHED Reserved 2026-02-20 | Published 2026-02-25 | Updated 2026-02-25 | Assigner GitHub_M

Problem types

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Product status

References

github.com/py-pdf/pypdf/issues/3654 exploit

github.com/.../pypdf/security/advisories/GHSA-2rw7-x74f-jg35

github.com/py-pdf/pypdf/issues/3654

github.com/...ommit/0fbd95938724ad2d72688d4112207c0590f0483f

cve.org (CVE-2026-27628)

nvd.nist.gov (CVE-2026-27628)

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