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CVE-2026-49452

6.5 · MEDIUM

WeasyPrint helps web developers to create PDF documents.

Published Aug 18, 2026CWE-74EPSS 0.37%

Overview

CVE-2026-49452 is a medium-severity vulnerability. It was published on August 18, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/__init__.py when presentational_hints=True. The background attribute is inserted into a background-image:url() declaration and parsed by tinycss2.parse_blocks_contents(), allowing untrusted HTML to inject additional CSS declarations. Applications that render untrusted HTML with presentational hints enabled can be affected by CSS injection and server-side requests through injected url() values. This issue is fixed in version 69.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Kozea/WeasyPrint/commit/e158264e33fa399b29f415d30719c1d85a55df1dGitHubgithub.com/Kozea/WeasyPrint/pull/2773GitHubgithub.com/Kozea/WeasyPrint/releases/tag/v69.0GitHubgithub.com/Kozea/WeasyPrint/security/advisories/GHSA-jhhc-3hcp-qhm5GitHubgithub.com/Kozea/WeasyPrint/security/advisories/GHSA-jhhc-3hcp-qhm5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-49452?

CVE-2026-49452 is a medium-severity vulnerability. It was published on August 18, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-49452?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-49452?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-49452?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-49452 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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