CVE-2021-40330
CVSS v3
7.5
HIGH
EPSS Score
2.9 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2021-08-31
Frequently asked questions
What is CVE-2021-40330?
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.
Is CVE-2021-40330 actively exploited?
Active exploitation of CVE-2021-40330 has not been confirmed. Its EPSS score was 2.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-40330?
CVE-2021-40330 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-40330 affecting your environment?
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