{"id":"CVE-2026-105689","title":"Penpot is an open-source design and prototyping platform","summary":"Penpot is an open-source design and prototyping platform. Prior to 2.18.0, app.util.ssrf/blocked-address? relies on Java InetAddress predicates that do not classify NAT64, 6to4, or Teredo addresses and applies additional CIDR checks only…","severity":"medium","cvss":6,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N","cwe":["CWE-918"],"vendor":"penpot","product":"penpot","affected":["penpot < 2.18.0"],"published":"2026-10-05","updated":"2026-10-05","sourceUpdated":"2026-10-05T20:17:18.873","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105689","references":[{"url":"https://github.com/penpot/penpot/commit/326d83e780ae120b45ccd6f3d7bd24922b54461c","label":"security-advisories@github.com"},{"url":"https://github.com/penpot/penpot/releases/tag/2.18.0","label":"security-advisories@github.com"},{"url":"https://github.com/penpot/penpot/security/advisories/GHSA-wxgm-8qjw-x445","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-10-05T20:32:56.651Z","slug":"CVE-2026-105689","body":"## Overview\n\nPenpot is an open-source design and prototyping platform. Prior to 2.18.0, app.util.ssrf/blocked-address? relies on Java InetAddress predicates that do not classify NAT64, 6to4, or Teredo addresses and applies additional CIDR checks only to IPv4 values. Exploitation requires routing through a NAT64 gateway or an attacker-controlled DNS AAAA record; cloud environments with NAT64 gateways are directly exploitable. A user controlling a media import URL, or an administrator controlling a webhook URL, can then supply an IPv6 transition address that embeds a cloud-metadata, loopback, link-local, or private IPv4 target and bypasses the intended SSRF restrictions. Media import can disclose response bodies, while webhook delivery can expose response status as a network-probing side channel. This issue is fixed in version 2.18.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":33,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}