What is the CVSS score of CVE-2026-27024?

CVE-2026-27024 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Python are affected by CVE-2026-27024?

Organizations using pypdf should be aware of moderate risk from CVE-2026-27024 rated CVSS 5.5. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2026-27024?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Python CVE-2026-27024

MEDIUM

Loop with Unreachable Exit Condition (Infinite Loop) (CWE-835)

2026-02-20 security-advisories@github.com

GHSA-996q-pr4m-cvgq

Python Pypdf Red Hat Suse

5.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.5 MEDIUM

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SUSE

MEDIUM

qualitative

Red Hat

5.5 MEDIUM

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

Patch released

Feb 24, 2026 - 15:19 nvd

Patch available

CVE Published

Feb 20, 2026 - 22:16 nvd

MEDIUM 5.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

4 pypi packages depend on pypdf (4 direct, 0 indirect)

Ecosystem-wide dependent count for version 6.7.1.

DescriptionGitHub Advisory

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires accessing the children of a TreeObject, for example as part of outlines. This vulnerability is fixed in 6.7.1.

AnalysisAI

Pypdf versions up to 6.7.1 is affected by loop with unreachable exit condition (infinite loop) (CVSS 5.5).

Technical ContextAI

This vulnerability (CWE-835: Loop with Unreachable Exit Condition (Infinite Loop)) affects Pypdf. pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires accessing the children of a TreeObject, for example as part of outlines. This vulnerability is fixed in 6.7.1.

RemediationAI

A vendor patch is available — apply it immediately. Fixed in version 6.7.1..

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Same weakness CWE-835 – Loop with Unreachable Exit Condition (Infinite Loop)

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Vendor StatusVendor

SUSE

Severity: Medium

Product	Status
openSUSE Leap 16.0	Fixed
openSUSE Tumbleweed	Fixed

CVE-2026-27024 vulnerability details – vuln.today

Back

Python CVE-2026-27024

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

Blast Radius

DescriptionGitHub Advisory

AnalysisAI

Technical ContextAI

RemediationAI

More in Python

Same weakness CWE-835 – Loop with Unreachable Exit Condition (Infinite Loop)

Vendor StatusVendor

SUSE

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External POC / Exploit Code