CVE-2026-16487 (GCVE-0-2026-16487)

Vulnerability from cvelistv5 – Published: 2026-10-19 05:27 – Updated: 2026-10-21 06:20
VLAI

Red Hat Product Security has determined that this is not a vulnerability in bootc or containers-common. bootc fetches images under /etc/containers/policy.json. The shipped default is insecureAcceptAnything for registries without an explicit signature requirement; registry.redhat.io and registry.access.redhat.com require signatures. Updating a mutable tag requires the ability to publish to the reference an administrator has already configured the host to follow. Requiring signatures is available through that policy and through bootc enforce-container-sigpolicy, which is off by default. Persistence of /var across bootc rollback is expected image-mode behavior.

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{
  "containers": {
    "cna": {
      "providerMetadata": {
        "dateUpdated": "2026-10-21T06:20:13.903Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "rejectedReasons": [
        {
          "lang": "en",
          "value": "Red Hat Product Security has determined that this is not a vulnerability in bootc or containers-common. bootc fetches images under /etc/containers/policy.json. The shipped default is insecureAcceptAnything for registries without an explicit signature requirement; registry.redhat.io and registry.access.redhat.com require signatures. Updating a mutable tag requires the ability to publish to the reference an administrator has already configured the host to follow. Requiring signatures is available through that policy and through bootc enforce-container-sigpolicy, which is off by default. Persistence of /var across bootc rollback is expected image-mode behavior."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-16487",
    "datePublished": "2026-10-19T05:27:30.898Z",
    "dateRejected": "2026-10-21T06:20:13.903Z",
    "dateReserved": "2026-07-21T15:40:31.772Z",
    "dateUpdated": "2026-10-21T06:20:13.903Z",
    "state": "REJECTED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-16487",
      "date": "2026-10-20",
      "epss": "0.00173",
      "percentile": "0.06308"
    },
    "nvd": {
      "cve": {
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Rejected reason: Red Hat Product Security has determined that this is not a vulnerability in bootc or containers-common. bootc fetches images under /etc/containers/policy.json. The shipped default is insecureAcceptAnything for registries without an explicit signature requirement; registry.redhat.io and registry.access.redhat.com require signatures. Updating a mutable tag requires the ability to publish to the reference an administrator has already configured the host to follow. Requiring signatures is available through that policy and through bootc enforce-container-sigpolicy, which is off by default. Persistence of /var across bootc rollback is expected image-mode behavior."
          }
        ],
        "id": "CVE-2026-16487",
        "lastModified": "2026-10-21T07:17:17.703",
        "metrics": {},
        "published": "2026-10-19T06:17:24.203",
        "references": [],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Rejected"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-10-21T16:28:18+00:00",
      "cve": "CVE-2026-16487",
      "id": "CVE-2026-16487",
      "initial_release_date": "2026-10-10T00:00:00+00:00",
      "product_status:known_not_affected": "23",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "bootc: containers-common: bootc: automatic updates can apply unsigned mutable-tag content under default containers policy",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-16487.json",
      "version": "3"
    }
  }
}



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