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CVE-2026-54787

Estado: Pendiente de análisisBaja (3.1)—

sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a certificate, which can allow an attacker holding expired key material to sign accepted bundles. This issue is fixed in version 1.2.1.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Sigstore — Sigstore-goAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-54787",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54787",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-31T23:35:40.966529Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.1,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "sigstore",
          "product": "sigstore-go",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.2.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-07-31T23:17:25.287",
  "references": [
    {
      "url": "https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188f35ed5f",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sigstore/sigstore-go/pull/642",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-324"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a certificate, which can allow an attacker holding expired key material to sign accepted bundles. This issue is fixed in version 1.2.1."
    }
  ],
  "lastModified": "2026-09-10T20:30:11.423",
  "sourceIdentifier": "security-advisories@github.com"
}