Moderate severityNVD Advisory· Published Oct 22, 2025· Updated Oct 23, 2025
pypdf manipulated LZWDecode streams can exhaust RAM
CVE-2025-62708
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.
AI Insight
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pypdfPyPI | < 6.1.3 | 6.1.3 |
Affected products
7- osv-coords6 versionspkg:apk/chainguard/nemopkg:apk/chainguard/open-webuipkg:apk/chainguard/open-webui-compatpkg:apk/wolfi/open-webuipkg:apk/wolfi/open-webui-compatpkg:pypi/pypdf
< 2.5.2-r0+ 5 more
- (no CPE)range: < 2.5.2-r0
- (no CPE)range: < 0.6.34-r1
- (no CPE)range: < 0.6.34-r1
- (no CPE)range: < 0.6.34-r1
- (no CPE)range: < 0.6.34-r1
- (no CPE)range: < 6.1.3
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-jfx9-29x2-rv3jghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-62708ghsaADVISORY
- github.com/py-pdf/pypdf/commit/e51d07807ffcdaf18077b9486dadb3dc05b368daghsax_refsource_MISCWEB
- github.com/py-pdf/pypdf/pull/3502ghsax_refsource_MISCWEB
- github.com/py-pdf/pypdf/releases/tag/6.1.3ghsax_refsource_MISCWEB
- github.com/py-pdf/pypdf/security/advisories/GHSA-jfx9-29x2-rv3jghsax_refsource_CONFIRMWEB
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