CVE-2026-28351

EUVD-2026-9070
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.
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: 35.05%
Affected Products (NVD)
VendorProductVersion
pypdf_projectpypdf
𝑥
< 6.7.4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
pypdf
bookworm
no-dsa
forky
6.9.2-2
fixed
sid
6.9.2-2
fixed
trixie
no-dsa
pypdf2
bookworm
no-dsa
bullseye
postponed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
pypdf
jammy
dne
noble
needs-triage
questing
ignored
resolute
needs-triage
pypdf2
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
dne
resolute
dne
xenial
needs-triage
Common Weakness Enumeration
References
https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858
https://github.com/py-pdf/pypdf/pull/3664
https://github.com/py-pdf/pypdf/releases/tag/6.7.4
https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg