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CVE-2026-59948

HIGH
7.0
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-59948
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-07-07 18:49 UTC
Published
2026-07-08 19:33 UTC
Last updated
2026-07-09 14:32 UTC
Primary CWE
CWE-22
CWE-22: Improper Limitation of a Pathname to a Restricted Di…
Vendor / Product
composer / composer
Sources
cve.org  ·  NVD

Severity & Metrics

7.0 HIGH CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
composer composer — >= 1.0, < 2.2.29, >= 2.3.0, < 2.10.2
Weakness (CWE)
CWESourceDescription
CWE-22 cna CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-787 cna CWE-787: Out-of-bounds Write
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.0 HIGH 3.1 cna CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References (5)
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