CVE-2026-28804

EUVD-2026-10010
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
pypdf_projectpypdf
𝑥
< 6.7.5
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/py-pdf/pypdf/commit/648c627d2657447dfb1773412af05a0a5103b98f
https://github.com/py-pdf/pypdf/pull/3666
https://github.com/py-pdf/pypdf/releases/tag/6.7.5
https://github.com/py-pdf/pypdf/security/advisories/GHSA-9m86-7pmv-2852