SB2026100126 - Incomplete List of Disallowed Inputs in Simple Git

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Main Vulnerability Database SB2026100126

SB2026100126 - Incomplete List of Disallowed Inputs in Simple Git

Published: October 1, 2026

Security Bulletin ID SB2026100126
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Incomplete List of Disallowed Inputs (CVE-ID: CVE-2026-102828)

CWE-ID: CWE-184 - Incomplete List of Disallowed Inputs

CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary commands.

The vulnerability exists due to an incomplete blacklist in the blockUnsafeOperationsPlugin when processing attacker-controlled trailer command configuration. A remote attacker can supply a trailer.<token>.cmd configuration value and invoke git interpret-trailers to execute arbitrary commands.

Exploitation requires an application to pass attacker-controlled configuration or command arguments to simple-git while the default unsafe-operation plugin is active, and the invoked Git binary must support trailer command behavior.


Remediation

Install update from vendor's website.

References