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CVE-2026-14336

Full vulnerability record from the local CVENow database.

Description

PIA's OIDC issuer allowlist for Jenkins tokens uses a bare string-prefix check (issuer.startswith(' https://ci.eclipse.org ') in is_issuer_known, pia/models.py:139) instead of validating the issuer as a properly host-bounded URL. An attacker can craft an issuer such as https://[email protected] (userinfo trick) or https://ci.eclipse.org.evil.host (suffix trick) that satisfies the prefix check while pointing the OIDC discovery and JWKS fetches at a server the attacker controls. An unauthenticated caller of POST /v1/upload/sbom can use this to force PIA to make outbound HTTP(S) requests to an arbitrary attacker-chosen host, and to have oidc.verify_token accept a JWT signed with the attacker's own key.

Severity
HIGH
CVSS score
8.2 (v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-07-02 10:16:28.487000
Last modified
2026-10-25 21:10:00.770000
View original CVE JSON
{
  "id": "CVE-2026-14336",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-02T10:16:28.487",
  "lastModified": "2026-10-25T21:10:00.770",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PIA's OIDC issuer allowlist for Jenkins tokens uses a bare string-prefix check (issuer.startswith(' https://ci.eclipse.org ') in is_issuer_known, pia/models.py:139) instead of validating the issuer as a properly host-bounded URL. An attacker can craft an issuer such as  https://[email protected]  (userinfo trick) or  https://ci.eclipse.org.evil.host  (suffix trick) that satisfies the prefix check while pointing the OIDC discovery and JWKS fetches at a server the attacker controls. An unauthenticated caller of POST /v1/upload/sbom can use this to force PIA to make outbound HTTP(S) requests to an arbitrary attacker-chosen host, and to have oidc.verify_token accept a JWT signed with the attacker's own key."
    },
    {
      "lang": "es",
      "value": "La lista blanca de emisores OIDC de PIA para tokens de Jenkins utiliza una comprobación de prefijo de cadena simple (issuer.startswith(’ https://ci.eclipse.org ’) en is_issuer_known, pia/models.py:139) en lugar de validar el emisor como una URL correctamente delimitada por el host. Un atacante puede crear un emisor como https://[email protected] (truco de userinfo) o https://ci.eclipse.org.evil.host (truco de sufijo) que satisface la comprobación de prefijo mientras dirige las recuperaciones de descubrimiento OIDC y JWKS a un servidor que el atacante controla. Un llamador no autenticado de POST /v1/upload/sbom puede usar esto para forzar a PIA a realizar solicitudes HTTP(S) salientes a un host arbitrario elegido por el atacante, y a que oidc.verify_token acepte un JWT firmado con la propia clave del atacante."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Eclipse Foundation",
          "product": "Eclipse CSI - PIA",
          "defaultStatus": "unaffected",
          "repo": "https://github.com/eclipse-csi/pia",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "0.3.0",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-02T12:26:02.672416Z",
          "id": "CVE-2026-14336",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/154",
      "source": "[email protected]"
    }
  ]
}