CVE-2025-62708
HIGH7.5EPSS 0.08%pypdf can exhaust RAM via manipulated LZWDecode streams
Published: 10/22/2025Modified: 4/28/2026
Description
pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3.
Affected packages (2)
- Debian/pypdffrom 0
- PyPI/pypdffrom 0, < 6.1.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-62708
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-62708
- PATCHhttps://github.com/py-pdf/pypdf
- WEBhttps://github.com/py-pdf/pypdf/commit/e51d07807ffcdaf18077b9486dadb3dc05b368da
- WEBhttps://github.com/py-pdf/pypdf/pull/3502
- WEBhttps://github.com/py-pdf/pypdf/releases/tag/6.1.3
- WEBhttps://github.com/py-pdf/pypdf/security/advisories/GHSA-jfx9-29x2-rv3j