Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-59948

7.0 · HIGH

Composer is a dependency Manager for the PHP language.

Published Jul 8, 2026CWE-22EPSS 0.16%

Overview

CVE-2026-59948 is a high-severity vulnerability. It was published on July 8, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a maliciously crafted package from an untrusted repository other than Packagist.org or Private Packagist can cause Composer to write attacker-controlled files outside the vendor directory and outside the project during install or update by using an invalid package name that is not correctly validated before dependency-resolution results are written or installed. This issue is fixed in versions 2.2.29 and 2.10.2.

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/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0GitHubgithub.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1GitHubgithub.com/composer/composer/releases/tag/2.10.2GitHubgithub.com/composer/composer/releases/tag/2.2.29GitHubgithub.com/composer/composer/security/advisories/GHSA-499r-g7pc-vmp9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-59948?

CVE-2026-59948 is a high-severity vulnerability. It was published on July 8, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2026-59948?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-59948?

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-2026-59948?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-59948 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.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999