CVE-2026-56696CWE-862

OpenHarness - Prompt Injection via /issue and /pr_comments Slash Commands

Medium · published June 23, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
29.7
In the wild
Unconfirmed
What it is

OpenHarness /issue and /pr_comments slash commands lack remote_invocable=False protection, allowing remote channel senders to write attacker-controlled Markdown into project context files. Admitted remote attackers can inject malicious content into .openharness/issue.md and .openharness/pr_comments.md files, which are subsequently injected into runtime system prompts, persistently influencing local agent behavior.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00370 · 29.7th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-06-23T15:36Z
EPSS history
Timeline
  • 23 JUN 15:36Z
    OpenHarness - Prompt Injection via /issue and /pr_comments Slash Commands
    cvelistv5