CVE-2023-26143

blamer vulnerable to Arbitrary Argument Injection via the blameByFile() API

6.5 MediumFix available

Versions of the package blamer before 1.0.4 are vulnerable to Arbitrary Argument Injection via the blameByFile() API. The library does not sanitize for user input or validate the given file path conforms to a specific schema, nor does it properly pass command-line flags to the git binary using the double-dash POSIX characters (--) to communicate the end of options.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: Low

Exploit likelihood

1.12%Up 1.1 points since Sep 19, 2023

What each source reports

CVE List Score used 6.5

Record: CVE-2023-26143
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P
Weakness: CWE-88
Updated: 2026-11-02

EUVDEUVD-2023-2444 6.5

Record: EUVD-2023-2444
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P
Updated: 2026-11-03

GitHub AdvisoriesGHSA-6f9p-g466-f8v8 6.5

blamer vulnerable to Arbitrary Argument Injection via the blameByFile() API

Versions of the blamer package before 1.0.4 are vulnerable to Arbitrary Argument Injection via the blameByFile() API. The library does not sanitize for user input or validate the given file path conforms to a specific schema, nor does it properly pass command-line flags to the git binary using the double-dash POSIX characters (--) to communicate the end of options.

Record: GHSA-6f9p-g466-f8v8
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Weakness: CWE-88
Updated: 2026-11-02

NVD 6.5

Record: CVE-2023-26143
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness: CWE-88
Updated: 2026-11-02

OSV 6.5

Record: CVE-2023-26143
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P
Weakness: CWE-88
Updated: 2026-11-02

OSVGHSA-6f9p-g466-f8v8 6.5

blamer vulnerable to Arbitrary Argument Injection via the blameByFile() API

Record: GHSA-6f9p-g466-f8v8
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Weakness: CWE-88
Updated: 2026-11-02

Affected products

blamer project blamer

Affected packages

Affected packages
Package	Affected	Fixed
`blamer` npm	before 1.0.4	1.0.4

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-26143 is a medium vulnerability (CVSS 6.5) in Blamer Project Blamer, published September 19, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.12%, the 66th percentile. Fixed in blamer 1.0.4.