Name: CVE-2026-5223: UNIX Symbolic Link (Symlink) Following
Creator: Rapid7
Published: 2026-05-25T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-5223, CWE-61, CVSS 5.3, EPSS 0.00058

Cargo incorrectly handled symlinks inside of crate tarballs downloaded from third-party registries, allowing a malicious crate to override the source code of another crate from the same registry. The severity of the vulnerability is **medium** for users of third-party registries. Users of crates.io are **not affected**, as crates.io forbids uploading crates containing any symlink.

CVSS Details

CVSS 4.0 Base Score: 6.5 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 5.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade rustUpgrade chromium-rust	Jun 2, 2026	May 25, 2026
Debian	—	Upgrade rustc	Sep 21, 2026	May 25, 2026
Redhat_linux	—	No solution exists	Jul 24, 2026	May 25, 2026

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CVSS Details

Covered by Rapid7

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