CVE-2026-54104 (GCVE-0-2026-54104)

Vulnerability from cvelistv5 – Published: 2026-06-18 16:12 – Updated: 2026-06-18 16:12 Exclusively Hosted Service
VLAI
Title
U.S. GAO EPDS and CBCA EDS client-based privilege escalation
Summary
The U.S. Government Accountability Office (GAO) Electronic Protest Docketing System (EPDS) and Civilian Board of Contract Appeals (CBCA) Electronic Docketing System (EDS) trusts client-provided values for the 'epds_role_id' parameter without verification, allowing a remote, authenticated attacker to escalate their own privileges.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-602 - Client-Side Enforcement of Server-Side Security
Assigner
References
Impacted products
Date Public
2026-06-18 00:00
Credits
Blake Rash, CISA
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Electronic Protest Docketing System (EPDS)",
          "vendor": "Government Accountability Office",
          "versions": [
            {
              "lessThan": "2026-02-22",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "2026-02-22"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Electronic Docketing System (EDS)",
          "vendor": "Civilian Board of Contract Appeals",
          "versions": [
            {
              "lessThan": "2026-03-19",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "2026-03-19"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Blake Rash, CISA"
        }
      ],
      "datePublic": "2026-06-18T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The U.S. Government Accountability Office (GAO) Electronic Protest Docketing System (EPDS) and Civilian Board of Contract Appeals (CBCA) Electronic Docketing System (EDS) trusts client-provided values for the \u0027epds_role_id\u0027 parameter without verification, allowing a remote, authenticated attacker to escalate their own privileges."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        },
        {
          "other": {
            "content": {
              "id": "CVE-2026-54104",
              "options": [
                {
                  "Exploitation": "none"
                },
                {
                  "Automatable": "no"
                },
                {
                  "Technical Impact": "total"
                }
              ],
              "role": "CISA Coordinator",
              "timestamp": "2026-06-11T16:16:59.303813Z",
              "version": "2.0.3"
            },
            "type": "ssvc"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-602",
              "description": "CWE-602 Client-Side Enforcement of Server-Side Security",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-18T16:12:58.699Z",
        "orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
        "shortName": "cisa-cg"
      },
      "references": [
        {
          "name": "url",
          "tags": [
            "vdb-entry"
          ],
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-54104"
        },
        {
          "name": "url",
          "tags": [
            "product"
          ],
          "url": "https://epds.gao.gov/"
        },
        {
          "name": "url",
          "tags": [
            "product"
          ],
          "url": "https://www.eds.cbca.gov/login"
        },
        {
          "name": "url",
          "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-01.json"
        }
      ],
      "tags": [
        "exclusively-hosted-service"
      ],
      "title": "U.S. GAO EPDS and CBCA EDS client-based privilege escalation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725",
    "assignerShortName": "cisa-cg",
    "cveId": "CVE-2026-54104",
    "datePublished": "2026-06-18T16:12:58.699Z",
    "dateReserved": "2026-06-11T19:41:26.775Z",
    "dateUpdated": "2026-06-18T16:12:58.699Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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