GHSA-VHQX-CFMX-MJQ9
Vulnerability from github – Published: 2026-09-21 15:32 – Updated: 2026-09-21 15:32A flaw was found in openshift/oc-mirror. The tool incorrectly verifies PGP (Pretty Good Privacy) release image signatures by checking for signature errors before the entire signed body is processed, leading to a bypass of the signature verification. A remote attacker, by intercepting or manipulating network traffic to the signature endpoint, could exploit this to craft a PGP message with a valid Red Hat release key ID but a forged signature. This enables the oc-mirror tool to accept and mirror a malicious release payload into a disconnected registry, potentially compromising the integrity of software deployments.
{
"affected": [],
"aliases": [
"CVE-2026-75939"
],
"database_specific": {
"cwe_ids": [
"CWE-347"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-21T15:17:31Z",
"severity": "HIGH"
},
"details": "A flaw was found in openshift/oc-mirror. The tool incorrectly verifies PGP (Pretty Good Privacy) release image signatures by checking for signature errors before the entire signed body is processed, leading to a bypass of the signature verification. A remote attacker, by intercepting or manipulating network traffic to the signature endpoint, could exploit this to craft a PGP message with a valid Red Hat release key ID but a forged signature. This enables the `oc-mirror` tool to accept and mirror a malicious release payload into a disconnected registry, potentially compromising the integrity of software deployments.",
"id": "GHSA-vhqx-cfmx-mjq9",
"modified": "2026-09-21T15:32:05Z",
"published": "2026-09-21T15:32:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75939"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-75939"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517976"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
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