FKIE_CVE-2026-1496

Vulnerability from fkie_nvd - Published: 2026-03-27 15:16 - Updated: 2026-03-30 13:26
Severity ?
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for command line tooling that makes it vulnerable to an authentication bypass. A malicious actor with access to the /token API endpoint that either knows or guesses a valid username, can use this in a specially crafted HTTP request to bypass authentication. Successful exploitation allows the malicious actor to assume all roles and privileges granted to the valid user’s Coverity Connect account.
References
disclosure@synopsys.comhttps://community.blackduck.com/s/article/Black-Duck-Security-Advisory-CVE-2026-1496
disclosure@synopsys.comhttps://community.blackduck.com/s/article/Instructions-on-how-to-block-token-endpoint-for-Coverity-Connect
disclosure@synopsys.comhttps://community.blackduck.com/s/article/WAF-IDS-IPS-Mitigation-Guidance
disclosure@synopsys.comhttps://github.com/blackduck-inc/Coverity-Usage-Log-Analyzer
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for command line tooling that makes it vulnerable to an authentication bypass.\u00a0A malicious actor with access to the\u00a0/token\u00a0API endpoint that either knows or guesses a valid username, can use this in a specially crafted HTTP request to bypass authentication.\u00a0Successful exploitation allows the malicious actor to assume all roles and privileges granted to the valid user\u2019s Coverity Connect account."
    }
  ],
  "id": "CVE-2026-1496",
  "lastModified": "2026-03-30T13:26:29.793",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@synopsys.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-27T15:16:48.053",
  "references": [
    {
      "source": "disclosure@synopsys.com",
      "url": "https://community.blackduck.com/s/article/Black-Duck-Security-Advisory-CVE-2026-1496"
    },
    {
      "source": "disclosure@synopsys.com",
      "url": "https://community.blackduck.com/s/article/Instructions-on-how-to-block-token-endpoint-for-Coverity-Connect"
    },
    {
      "source": "disclosure@synopsys.com",
      "url": "https://community.blackduck.com/s/article/WAF-IDS-IPS-Mitigation-Guidance"
    },
    {
      "source": "disclosure@synopsys.com",
      "url": "https://github.com/blackduck-inc/Coverity-Usage-Log-Analyzer"
    }
  ],
  "sourceIdentifier": "disclosure@synopsys.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "disclosure@synopsys.com",
      "type": "Secondary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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