VulnerabilityAnalyzed

CVE-2025-62707

Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop.

MEDIUM 6.6EPSS 0.41%

Does this matter?

Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.

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 an infinite loop. This requires parsing the content stream of a page which has an inline image using the DCTDecode filter. This has been fixed in pypdf version 6.1.3.

CVSS 4.0: 6.6 MEDIUMCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.41% probability · 35th percentile
CISA KEV: Not listed
Weakness: CWE-834
Affected: pypdf project/pypdf
Source: security-advisories@github.com

References

https://github.com/py-pdf/pypdf/commit/f2864d6dd9bac7cecd3f4f54308b25ebbfa178f8Patch
https://github.com/py-pdf/pypdf/pull/3501Patch
https://github.com/py-pdf/pypdf/releases/tag/6.1.3Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-vr63-x8vc-m265Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.