What’s Vulnerable › Vulnerabilities

CVE-2026-40503: OpenHarness Path Traversal Information Disclosure via /memory show

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-16 · updated 2026-10-26
• Weakness: CWE-22

Description

OpenHarness prior to commit dd1d235 contains a path traversal vulnerability that allows remote gateway users with chat access to read arbitrary files by supplying path traversal sequences to the /memory show slash command. Attackers can manipulate the path input parameter to escape the project memory directory and access sensitive files accessible to the OpenHarness process without filesystem containment validation.

Affected products

• HKUDS OpenHarness: before 2026-04-13 — fixed in 2026-04-13

How to fix

Upgrade to a fixed version: HKUDS OpenHarness 2026-04-13. Check the vendor advisory for mitigations.

References

• https://github.com/HKUDS/OpenHarness/commit/dd1d235450dd987b20bff01b7bfb02fe8620a0af
• https://github.com/HKUDS/OpenHarness/pull/127
• https://www.vulncheck.com/advisories/openharness-path-traversal-information-disclosure-via-memory-show

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