Resource exhaustion in Py-pdf Pypdf
CVE-2026-31826
pypdf is a free and open-source pure-python PDF library. Prior to 6.8.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing a content stream with a rather large /Length value, r…
EPSS: 0.000 (0.3th percentile) — read the EPSS interpretation.
Affected products
- Py-pdf Pypdf — versions < 6.8.0
Weakness classification (CWE)
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-hqmh-ppp3-xvm7 (x_refsource_CONFIRM)
- https://github.com/py-pdf/pypdf/pull/3675 (x_refsource_MISC)
- https://github.com/py-pdf/pypdf/releases/tag/6.8.0 (x_refsource_MISC)