What’s Vulnerable › Vulnerabilities

CVE-2021-40330

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-31 · updated 2026-06-17

Description

git_connect_git in connect.c in Git before 2.30.1 allows a repository path to contain a newline character, which may result in unexpected cross-protocol requests, as demonstrated by the git://localhost:1234/%0d%0a%0d%0aGET%20/%20HTTP/1.1 substring.

Affected products

• Debian Linux: 10.0
• git: before 2.30.1 — fixed in 2.30.1

How to fix

Upgrade to a fixed version: git 2.30.1. Check the vendor advisory for mitigations.

References

• https://github.com/git/git/commit/a02ea577174ab8ed18f847cf1693f213e0b9c473
• https://github.com/git/git/compare/v2.30.0...v2.30.1
• https://lists.debian.org/debian-lts-announce/2022/10/msg00014.html
• https://github.com/git/git/commit/a02ea577174ab8ed18f847cf1693f213e0b9c473
• https://github.com/git/git/compare/v2.30.0...v2.30.1
• https://lists.debian.org/debian-lts-announce/2022/10/msg00014.html

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