CVE-2026-15311

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Source

https://cve.org/CVERecord?id=CVE-2026-15311

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-15311.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-15311

Published

2026-07-09T23:45:10.318Z

Modified

2026-07-15T01:49:15.630858681Z

Severity

2.0 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator

Summary

NousResearch hermes-agent Matrix Adapter matrix.py MatrixAdapter._markdown_to_html cross site scripting

Details

A vulnerability was identified in NousResearch hermes-agent up to 2026.5.29.2. Affected by this issue is the function MatrixAdapter.markdownto_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.

Database specific

{
    "cwe_ids": [
        "CWE-79",
        "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15311.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "2026.5.29.0"
                },
                {
                    "last_affected": "2026.5.29.0"
                },
                {
                    "introduced": "2026.5.29.1"
                },
                {
                    "last_affected": "2026.5.29.1"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "VulDB"
}

References

Affected packages

Git / github.com/nousresearch/hermes-agent

Affected ranges

Type

GIT

Repo

https://github.com/nousresearch/hermes-agent

Events

Introduced

77a1650c78a4cb1813d8a81fa1da40a15b6a3ec5

Last affected

77a1650c78a4cb1813d8a81fa1da40a15b6a3ec5

Database specific

{
    "extracted_events": [
        {
            "introduced": "2026.5.29.2"
        },
        {
            "last_affected": "2026.5.29.2"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

2026.*

2026.5.29.2

v2026.*

v2026.5.29.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-15311.json"