Command injection in gitlog

published 2021-02-08 5 y ago modified 2026-06-17 4 mo ago also GHSA-67mm-m3wx-j7fr , EUVD-2021-0771

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 5.4%; EPSS 5.4% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

The gitlog function in src/index.ts in gitlog before 4.0.4 has a command injection vulnerability.

Patch / fix

fixed in 2 links 2

npm gitlog 4.0.4
gitlog_project gitlog 4.0.4

github.com/domharrington/node-gitlog#65 commit
github.com/domharrington/node-gitlog#65 pull request

Exploit prediction

5.43% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

advisory.checkmarx.net https://advisory.checkmarx.net/advisory/CX-2020-4301 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	gitlog	<4.0.4	4.0.4

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-77 Improper Neutralization of Special Elements used in a Command

References

github.com /domharrington/node-gitlog/pull/65
web, patch, third-party-advisory
github.com /domharrington/node-gitlog/pull/65/commits/bb22ffb2c907e0284f887ab625e12b88c31f4bf4
web
advisory.checkmarx.net /advisory/CX-2020-4301
web, exploit, third-party-advisory
npmjs.com /package/gitlog
web, product, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-26541
advisory
github.com /domharrington/node-gitlog
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary