Back to search
CVE-2026-28351
Published: Feb 27, 2026
Modified: Mar 3, 2026
PUBLISHED
Description
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.
| Vendor | Product | Versions |
|---|---|---|
py-pdf | pypdf | affected < 6.7.4 |
Weaknesses (CWE)
References
https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg
x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3664
x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.7.4
x_refsource_MISC
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now