GHSA-f2v5-7jq9-h8cg
pypdf: Manipulated RunLengthDecode streams can exhaust RAM
At a glance
- Published
- Updated
- CVE
- CVE-2026-28351
- Aliases
- PYSEC-2026-3017
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
### Impact 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. ### Patches This has been fixed in [pypdf==6.7.4](https://github.com/py-pdf/pypdf/releases/tag/6.7.4). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#3664](https://github.com/py-pdf/pypdf/pull/3664).
Affected packages
| Package | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.7.4 |
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-28351 ADVISORY
- https://github.com/py-pdf/pypdf/pull/3664 WEB
- https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.7.4 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |