Command Injection Vulnerability in Conflibot GitHub Integration
CVE-2026-55158

9.1CRITICAL

Key Information:

Vendor

Wktk

Status
Conflibot
Vendor
CVE Published:
15 September 2026

What is CVE-2026-55158?

Conflibot, a GitHub integration, has a command injection vulnerability that allows attackers to exploit pull requests containing shell metacharacters. This vulnerability can lead to unauthorized command execution on a runner with sensitive repository secrets and a write-scoped GITHUB_TOKEN, facilitating secret exfiltration and potential token abuse. The vulnerability has been addressed in versions 1.2.1 and 2.0.0, which utilize safer methods for executing commands.

Affected Version(s)

conflibot < 1.2.1

References

https://github.com/wktk/conflibot/security/advisories/GHS...
x_refsource_CONFIRM
https://github.com/wktk/conflibot/pull/329
x_refsource_MISC
https://github.com/wktk/conflibot/commit/0107ac6a4575ea20...
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.