CVE-2026-57204
MEDIUM
MEDIUM
Priority: 0.03
BB Relevance:
74/100
Published: 2026-06-30
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
X
AT:
None
VC:
None
VI:
None
VA:
Low
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| pypdf_project | pypdf | < 6.13.3 |
References & Advisories (2)
Product
Release Notes
Patch
Vendor Advisory