GHSA-39mj-jf6j-2qj3
pypdf: Possible infinite loop when hitting EOF in standard xref table
At a glance
- Published
- Updated
- CVE
- CVE-2026-113794
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Description
### Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires an incomplete file which ends inside the xref table. ### Patches This has been fixed in [pypdf==6.20.0](https://github.com/py-pdf/pypdf/releases/tag/6.20.0). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4170](https://github.com/py-pdf/pypdf/pull/4170). ### Notes This has been reported through both the secure channel and as a public issue at [#4169](https://github.com/py-pdf/pypdf/issues/4169).
Affected packages
| Package | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.20.0 |
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-39mj-jf6j-2qj3 WEB
- https://github.com/py-pdf/pypdf/issues/4169 WEB
- https://github.com/py-pdf/pypdf/pull/4170 WEB
- https://github.com/py-pdf/pypdf/commit/37e1cd681744bac38b159f7e1c614eee8d639c58 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.20.0 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |