CVE catalog
CVE-2023-36810
pypdf2: CVE-2023-36810
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.63% · Oct 25, 2026
pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. This issue has been addressed in PR 808 and versions from 1.27.9 include this fix. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pypdf2 | bookworm | 2.12.1-3+deb12u1 | fixed |
| Ubuntu | pypdf2 | pro | 1.26.0-2 | vulnerable |
| Ubuntu | pypdf2 | pro | 1.26.0-2ubuntu0.1~esm1 | vulnerable |
| Ubuntu | pypdf2 | pro | 1.26.0-2ubuntu0.1~esm2 | fixed |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-2 | vulnerable |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-3ubuntu1 | vulnerable |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-3ubuntu1.20.04.1 | vulnerable |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-3ubuntu1.20.04.2 | fixed |
| Ubuntu | pypdf2 | 22.04 | 1.26.0-4 | vulnerable |
| Ubuntu | pypdf2 | 22.04 | 1.26.0-4ubuntu0.22.04.1 | vulnerable |
| Ubuntu | pypdf2 | 22.04 | 1.26.0-4ubuntu0.22.04.2 | fixed |
| Ubuntu | pypdf2 | pro | 1.26.0-2 | vulnerable |
| Ubuntu | pypdf2 | pro | 1.26.0-2ubuntu0.1~esm1 | vulnerable |
| Ubuntu | pypdf2 | pro | 1.26.0-2ubuntu0.1~esm2 | fixed |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-2 | vulnerable |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-3ubuntu1 | vulnerable |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-3ubuntu1.20.04.1 | vulnerable |
| Ubuntu | pypdf2 | 20.04 | 1.26.0-3ubuntu1.20.04.2 | fixed |
| Ubuntu | pypdf2 | 22.04 | 1.26.0-4 | vulnerable |
| Ubuntu | pypdf2 | 22.04 | 1.26.0-4ubuntu0.22.04.1 | vulnerable |
| Ubuntu | pypdf2 | 22.04 | 1.26.0-4ubuntu0.22.04.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pypdf2 | source | bookworm | 1.27.9-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | pypdf2 | deb | pro | 1.26.0-2ubuntu0.1~esm2 | Not reported | USN-6280-1 | Not reported |
| Ubuntu | pypdf2 | deb | 20.04 | 1.26.0-3ubuntu1.20.04.2 | Not reported | USN-6280-1 | Not reported |
| Ubuntu | pypdf2 | deb | 22.04 | 1.26.0-4ubuntu0.22.04.2 | Not reported | USN-6280-1 | Not reported |
| Ubuntu | pypdf2 | deb | pro | 1.26.0-2ubuntu0.1~esm2 | Not reported | UBUNTU-CVE-2023-36810 | Not reported |
| Ubuntu | pypdf2 | deb | 20.04 | 1.26.0-3ubuntu1.20.04.2 | Not reported | UBUNTU-CVE-2023-36810 | Not reported |
| Ubuntu | pypdf2 | deb | 22.04 | 1.26.0-4ubuntu0.22.04.2 | Not reported | UBUNTU-CVE-2023-36810 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-36810]
- [https://osv.dev/vulnerability/DLA-3497-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-36810]
- [https://osv.dev/vulnerability/USN-6280-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-36810]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]