CVE-2026-57204
pypdf: Missing stream length values ignore defined limits
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.
INFO
Published Date :
June 30, 2026, 9:59 p.m.
Last Modified :
June 30, 2026, 9:59 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-57204
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update pypdf to version 6.13.3.
- Apply vendor patches or updates.
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CVE-2026-57204 vulnerability anywhere in the article.