HKUDS OpenHarness up to 0.1.9 openharness/issue.md authorization

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.68

Summaryinfo

A vulnerability, which was classified as critical, has been found in HKUDS OpenHarness up to 0.1.9. This affects an unknown part of the file openharness/issue.md. This manipulation causes authorization. This vulnerability is registered as CVE-2026-56696. Remote exploitation of the attack is possible. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability has been found in HKUDS OpenHarness up to 0.1.9 and classified as critical. Affected by this vulnerability is an unknown functionality of the file openharness/issue.md. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE 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 weakness was published by Chia Min Jun Lennon. The advisory is shared at github.com. This vulnerability is known as CVE-2026-56696 since 06/22/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available.

Applying the patch 27bb93b810e9ea8fa4832eab7152eeb3b4a6bffb is able to eliminate this problem. The bugfix is ready for download at github.com.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 27bb93b810e9ea8fa4832eab7152eeb3b4a6bffb

Timelineinfo

06/22/2026 CVE reserved
06/23/2026 +1 days Advisory disclosed
06/23/2026 +0 days VulDB entry created
06/23/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Researcher: Chia Min Jun Lennon
Status: Confirmed

CVE: CVE-2026-56696 (🔒)
GCVE (CVE): GCVE-0-2026-56696
GCVE (VulDB): GCVE-100-373045

Entryinfo

Created: 06/23/2026 23:52
Changes: 06/23/2026 23:52 (78)
Complete: 🔍
Cache ID: 216::103

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