CVE-2026-15311

A vulnerability was identified in NousResearch hermes-agent up to 2026.5.29.2. Affected by this issue is the function MatrixAdapter._markdown_to_html of the file gateway/platforms/matrix.py of the component Matrix Adapter. Such manipulation leads to cross site scripting. The attack can be executed remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.

CVSS v3 3.5 LOW
CVSS v2.0 4.0 MEDIUM

3.5^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:P/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/NousResearch/hermes-agent/
https://github.com/NousResearch/hermes-agent/issues/42667
https://github.com/NousResearch/hermes-agent/pull/42759
https://vuldb.com/cve/CVE-2026-15311
https://vuldb.com/submit/852843
https://vuldb.com/vuln/377247
https://vuldb.com/vuln/377247/cti

Configurations

No configuration.

History

10 Jul 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-10 00:16

Updated : 2026-07-10 15:43

NVD link : CVE-2026-15311

Mitre link : CVE-2026-15311

CVE.ORG link : CVE-2026-15311

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-94

Improper Control of Generation of Code ('Code Injection')

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