{"id":"CVE-2026-91999","title":"Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS.\n\n\n\nThis issue affects Apache Sling XSS: before 2.4.12.\n\n\n\nUsers are recommended to upgrade to version 2.4.12, which f…","summary":"Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS.\n\n\n\nThis issue affects Apache Sling XSS: before 2.4.12.\n\n\n\nUsers are recommended to upgrade to version 2.4.12, which f…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"Apache Software Foundation","product":"Apache Sling XSS","affected":["apache_sling_xss < 2.4.12"],"published":"2026-09-23","updated":"2026-09-23","sourceUpdated":"2026-09-23T17:58:26.570","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91999","references":[{"url":"https://lists.apache.org/thread/xpcsdkr80ow9p13f7hp3ykrhzky9d4t4","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/23/14","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"epss":0.00204,"epssPercentile":0.10738,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-23T14:05:07.662459Z"},"ingestedAt":"2026-09-23T10:21:54.375Z","slug":"CVE-2026-91999","body":"## Overview\n\nImproper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS.\n\n\n\nThis issue affects Apache Sling XSS: before 2.4.12.\n\n\n\nUsers are recommended to upgrade to version 2.4.12, which fixes the issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":209731,"id":"CVE-2026-91999","ts":1790177230159,"field":"cvss","old":null,"new":"6.1"},{"seq":209730,"id":"CVE-2026-91999","ts":1790177230159,"field":"severity","old":"none","new":"medium"}]}