Vulnerability-Lookup

GHSA-77P8-2QMX-794P

Vulnerability from github – Published: 2026-10-30 15:34 – Updated: 2026-10-30 15:34

Details

MuseBot before 2.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge admin sessions by using the hard-coded default session_key 'muse_bot_session_key'. Attackers can sign a MuseBot-session cookie carrying a user_id to gain full administrative access, reading password hashes, chat records, and bot configuration, and stopping bots.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-119660"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1394"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-30T15:16:50Z",
    "severity": "CRITICAL"
  },
  "details": "MuseBot before 2.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge admin sessions by using the hard-coded default session_key \u0027muse_bot_session_key\u0027. Attackers can sign a MuseBot-session cookie carrying a user_id to gain full administrative access, reading password hashes, chat records, and bot configuration, and stopping bots.",
  "id": "GHSA-77p8-2qmx-794p",
  "modified": "2026-10-30T15:34:39Z",
  "published": "2026-10-30T15:34:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119660"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yincongcyincong/MuseBot/issues/61"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yincongcyincong/MuseBot/commit/139f6158b50283b983d76976f593a3a09a064681"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yincongcyincong/MuseBot/commit/3e64518948fe7037058f07ef987d35216c3f0cae"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yincongcyincong/MuseBot"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/conf/conf.go#L28"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/controller/login.go#L19-L88"
    },
    {
      "type": "WEB",
      "url": "https://hackmd.io/@hieuPenguinnn/musebot-admin-default-session-key-auth-bypass"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/musebot-before-2.0.0-authentication-bypass-via-hard-coded-session-key"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-119660 (GCVE-0-2026-119660)

Vulnerability from cvelistv5 – Published: 2026-10-30 14:16 – Updated: 2026-10-30 14:16

Title

MuseBot before 2.0.0 Authentication Bypass via Hard-Coded Session Key

Summary

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-1394 - Use of Default Cryptographic Key

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7155 records in the last 180 days details

References

8 references

URL	Tags
https://github.com/yincongcyincong/MuseBot/issues/61	issue-tracking
https://github.com/yincongcyincong/MuseBot/commit…	patch
https://github.com/yincongcyincong/MuseBot/commit…	patch
https://github.com/yincongcyincong/MuseBot/blob/v…	technical-description
https://github.com/yincongcyincong/MuseBot/blob/v…	technical-description
https://hackmd.io/@hieuPenguinnn/musebot-admin-de…	third-party-advisory
https://github.com/yincongcyincong/MuseBot	product
https://www.vulncheck.com/advisories/musebot-befo…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
yincongcyincong	MuseBot	Affected: 0 , < 2.0.0 (semver)

Date Public

2026-10-22 00:00

Credits

hieuPenguinnn yincongcyincong

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "MuseBot",
          "repo": "https://github.com/yincongcyincong/MuseBot",
          "vendor": "yincongcyincong",
          "versions": [
            {
              "lessThan": "2.0.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "hieuPenguinnn"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "yincongcyincong"
        }
      ],
      "datePublic": "2026-10-22T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "MuseBot before 2.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge admin sessions by using the hard-coded default session_key \u0027muse_bot_session_key\u0027. Attackers can sign a MuseBot-session cookie carrying a user_id to gain full administrative access, reading password hashes, chat records, and bot configuration, and stopping bots."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1394",
              "description": "Use of Default Cryptographic Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T14:16:21.246Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/yincongcyincong/MuseBot/issues/61"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/yincongcyincong/MuseBot/commit/3e64518948fe7037058f07ef987d35216c3f0cae"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/yincongcyincong/MuseBot/commit/139f6158b50283b983d76976f593a3a09a064681"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/conf/conf.go#L28"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/controller/login.go#L19-L88"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://hackmd.io/@hieuPenguinnn/musebot-admin-default-session-key-auth-bypass"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/yincongcyincong/MuseBot"
        },
        {
          "name": "VulnCheck Advisory: MuseBot before 2.0.0 Authentication Bypass via Hard-Coded Session Key",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/musebot-before-2.0.0-authentication-bypass-via-hard-coded-session-key"
        }
      ],
      "title": "MuseBot before 2.0.0 Authentication Bypass via Hard-Coded Session Key",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-119660",
    "datePublished": "2026-10-30T14:16:21.246Z",
    "dateReserved": "2026-10-30T13:43:49.076Z",
    "dateUpdated": "2026-10-30T14:16:21.246Z",
    "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.
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