CVE-2026-27628

7.5 HIGH
Published: February 25, 2026 Modified: February 27, 2026
View on NVD

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/py-pdf/pypdf/commit/f0a462d36971cf077d74492a348d0d06fd60ea4d
Source: security-advisories@github.com
https://github.com/py-pdf/pypdf/issues/3654
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/py-pdf/pypdf/security/advisories/GHSA-2rw7-x74f-jg35
Source: security-advisories@github.com
Patch Vendor Advisory
https://github.com/py-pdf/pypdf/issues/3654
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Issue Tracking Patch

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.0%
15th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-835

Affected Vendors

pypdf_project

Related CVEs

CVE-2019-25582 6.5
CVE-2019-25581 8.2
CVE-2019-25580 8.2
CVE-2019-25579 7.5
CVE-2019-25578 8.2