Vulnerability-Lookup

GHSA-4H98-2JHP-QGM2

Vulnerability from github – Published: 2026-10-21 18:33 – Updated: 2026-10-21 18:33

Details

The webhook platform gateway in Nous Research Hermes Agent versions builds the session chat_id as webhook:{route_name}:{delivery_id} and re-derives the authorizing route by splitting that string, so a route name containing a ":" resolves toolset authorization to a different, higher-privileged prefix route than the one authenticated, which allows a remote attacker with the target HMAC to gain that higher-privileged route's toolsets.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-114463"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-21T16:17:34Z",
    "severity": null
  },
  "details": "The webhook platform gateway in Nous Research Hermes Agent versions builds the session chat_id as webhook:{route_name}:{delivery_id} and re-derives the authorizing route by splitting that string, so a route name containing a \":\" resolves toolset authorization to a different, higher-privileged prefix route than the one authenticated, which allows a remote attacker with the target HMAC to gain that higher-privileged route\u0027s toolsets.",
  "id": "GHSA-4h98-2jhp-qgm2",
  "modified": "2026-10-21T18:33:15Z",
  "published": "2026-10-21T18:33:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114463"
    },
    {
      "type": "WEB",
      "url": "https://github.com/NousResearch/hermes-agent/pull/115285"
    },
    {
      "type": "WEB",
      "url": "https://github.com/NousResearch/hermes-agent/releases/tag/v0.22.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pinarsadioglu/security-advisories/blob/main/webhook-route-authz-bypass.md"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-114463 (GCVE-0-2026-114463)

Vulnerability from cvelistv5 – Published: 2026-10-21 15:01 – Updated: 2026-10-21 19:25

Title

CVE-2026-114463

Summary

Severity

No CVSS data available.

CWE

CWE-863 Incorrect Authorization

Assigner

certcc CNA under the mitre root

CNA scorecard E 42/100 over 158 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/NousResearch/hermes-agent/pull…
https://github.com/NousResearch/hermes-agent/rele…
https://github.com/pinarsadioglu/security-advisor…

Impacted products

1 product

Vendor	Product	Version
Nous Research	Hermes Agent	Affected: 0 , ≤ 2026.8.19 (custom)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Hermes Agent",
          "vendor": "Nous Research",
          "versions": [
            {
              "lessThanOrEqual": "2026.8.19",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The webhook platform gateway in Nous Research Hermes Agent versions builds the session chat_id as webhook:{route_name}:{delivery_id} and re-derives the authorizing route by splitting that string, so a route name containing a \":\" resolves toolset authorization to a different, higher-privileged prefix route than the one authenticated, which allows a remote attacker with the target HMAC to gain that higher-privileged route\u0027s toolsets."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-863 Incorrect Authorization",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T19:25:04.202Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://github.com/NousResearch/hermes-agent/pull/115285"
        },
        {
          "url": "https://github.com/NousResearch/hermes-agent/releases/tag/v0.22.2"
        },
        {
          "url": "https://github.com/pinarsadioglu/security-advisories/blob/main/webhook-route-authz-bypass.md"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2026-114463",
      "x_generator": {
        "engine": "VINCE 3.0.51",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-114463"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-114463",
    "datePublished": "2026-10-21T15:01:02.634Z",
    "dateReserved": "2026-10-21T15:00:19.795Z",
    "dateUpdated": "2026-10-21T19:25:04.202Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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