High [CVE-2026-10582] Server-Side Request Forgery (SSRF) leading to information disclosure.
This high-severity Red Hat Linux advisory covers CVE-2026-10582 affecting Red Hat Hardened Images, Red Hat OpenShift GitOps, Red Hat OpenStack Platform 18.0.
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Summary
A flaw was found in Hugo. The `security.http.urls` allowlist, which controls outbound fetches, does not adequately validate the destination address of URLs.
This vulnerability allows a remote attacker to supply a specially crafted URL that resolves to internal network resources. As a result, the Hugo build process can fetch internal endpoints, and the sensitive response data may be embedded and published within the generated static site, leading to information disclosure.
Red Hat severity: Important — CVSS 7.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N). Weakness: CWE-918.
Affected Red Hat products: Red Hat Hardened Images; Red Hat OpenShift GitOps; Red Hat OpenStack Platform 18.0. Red Hat lists Red Hat Hardened Images as not affected.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 53 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 53 minutes ago·verify at source
Mitigation checklist
- To mitigate this vulnerability, ensure that the Hugo `security.http.urls` allowlist is strictly configured to permit outbound requests only to explicitly trusted external domains. Implement network egress filtering to prevent Hugo from initiating connections to internal, loopback, or private IP address ranges. This can be achieved by configuring firewall rules or network policies to block outbound traffic from the Hugo environment to RFC1918 addresses and other internal network segments.
Official advisory · high-confidence parse· fetched 53 minutes ago·verify at source
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