{"id":77840,"date":"2026-02-24T06:15:45","date_gmt":"2026-02-24T02:45:45","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-27129-cloud-metadata-ssrf-protection-bypass-via-ipv6-resolution\/"},"modified":"2026-02-24T06:15:45","modified_gmt":"2026-02-24T02:45:45","slug":"cve-2026-27129-cloud-metadata-ssrf-protection-bypass-via-ipv6-resolution","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-27129-cloud-metadata-ssrf-protection-bypass-via-ipv6-resolution\/","title":{"rendered":"CVE-2026-27129 &#8211; Cloud Metadata SSRF Protection Bypass via IPv6 Resolution"},"content":{"rendered":"<p>CVE ID : CVE-2026-27129<\/p>\n<p>Published :  Feb. 24, 2026, 2:45 a.m. | 20\u00a0minutes ago<\/p>\n<p>Description : Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS\u2019s GraphQL Asset mutation uses `gethostbyname()`, which only resolves IPv4 addresses. When a hostname has only AAAA (IPv6) records, the function returns the hostname string itself, causing the blocklist comparison to always fail and completely bypassing SSRF protection. This is a bypass of the security fix for CVE-2025-68437. Exploitation requires GraphQL schema permissions for editing assets in the &#8220; volume and creating assets in the &#8220; volume. These permissions may be granted to authenticated users with appropriate GraphQL schema access and\/or Public Schema (if misconfigured with write permissions). Versions 4.16.19 and 5.8.23 patch the issue.<\/p>\n<p>Severity: 0.0 | NA<\/p>\n<p>Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2026-27129 Published : Feb. 24, 2026, 2:45 a.m. | 20\u00a0minutes ago Description : Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS\u2019s GraphQL Asset mutation uses `gethostbyname()`, which only resolves IPv4 addresses. When a hostname has only AAAA (IPv6) &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-77840","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=77840"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77840\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=77840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=77840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=77840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}