CVE-2026-55158 Conflibot - Command Injection

Conflibot < 1.2.1 contains a command injection caused by unsafe interpolation of attacker-controlled pull request branch names in exec commands, letting attackers execute arbitrary commands with repository secrets, exploit requires pull_request_target workflow usage.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.80% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-78

Vendor fix

Update to versions 1.2.1 or 2.0.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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