CVE-2026-102999

high

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files can cause the dictionary-based attachments API in pypdf/_doc_common.py to reparse the full attachment list for each content lookup, producing repeated work and long runtimes when an application accesses the embedded-file mapping. This issue is fixed in version 6.19.0.

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj

https://github.com/py-pdf/pypdf/releases/tag/6.19.0

https://github.com/py-pdf/pypdf/pull/4081

https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-90272

Details

Source: Mitre, NVD

Published: 2026-09-30

Updated: 2026-10-01

Named Vulnerability: GHSA-v247-6f48-mgcj

Risk Information

CVSS v2

Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 8.7

Vector: 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

Severity: High

EPSS

EPSS: 0.00524