GHSA-5hgr-hg42-57jg
pypdf: Inefficient decoding of FlateDecode PNG predictor streams
At a glance
- Published
- Updated
- CVE
- CVE-2026-49460
- Aliases
- PYSEC-2026-3010
- CVSS_V4
- CVSS:4.0/AV:L/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 long runtimes. This requires accessing a stream which uses the `/FlateDecode` filter with a PNG predictor. ### Patches This has been fixed in [pypdf==6.12.2](https://github.com/py-pdf/pypdf/releases/tag/6.12.2). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#3806](https://github.com/py-pdf/pypdf/pull/3806).
Affected packages
| Package | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.12.2 |
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hgr-hg42-57jg WEB
- https://github.com/py-pdf/pypdf/pull/3806 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.12.2 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |