{"id":"CVE-2026-53962","title":"Discourse is an open-source discussion platform","summary":"Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, insufficient SVG sanitization in upload and user avatar handling could lead to cross-site scripting when a user visited specific URLs t…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-07-09","updated":"2026-07-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53962","references":[{"url":"https://github.com/discourse/discourse/commit/3ee8343cd7f00d59d8513bee0a12e02d50bfc358","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/810c2715799fd08b06fd6ffc664d9562fe9ea6ff","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/92a699d89b84685b6fdd63cd0d0e371793c69dad","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/b8ceb49f4ba52257be30eb3c2ce51a5bf03be5fe","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.1.5","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.4.2","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.5.1","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/releases/tag/v2026.6.0","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-jmcf-3367-78vv","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00415,"epssPercentile":0.35486,"ingestedAt":"2026-07-11T20:15:25.760Z","slug":"CVE-2026-53962","body":"## Overview\n\nDiscourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, insufficient SVG sanitization in upload and user avatar handling could lead to cross-site scripting when a user visited specific URLs that are not normally part of community browsing. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}