{"id":"CVE-2021-47996","title":"Rejected reason: This CVE ID has been rejected as a duplicate.","summary":"Rejected reason: This CVE ID has been rejected as a duplicate.","severity":"high","published":"2026-08-25","updated":"2026-09-08","sourceUpdated":"2026-09-08T15:17:33.597","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-47996","tags":["nvd","csaf","vex","red-hat"],"epss":0.00502,"epssPercentile":0.41186,"ingestedAt":"2026-09-08T15:33:26.955Z","vendor":"Red Hat","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-125"],"references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47996.json"},{"url":"https://access.redhat.com/security/cve/CVE-2021-47996"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2523549"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-47996"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-47996"},{"url":"https://github.com/sparklemotion/nokogiri/commit/0e1a49c8907645d2e155f0d89d4d9895ac5112b5"},{"url":"https://github.com/sparklemotion/nokogiri/commit/1098c30a040e72a4654968547f415be4e4c40fe7"},{"url":"https://github.com/sparklemotion/nokogiri/commit/1358d157d0bd83be1dfe356a69213df9fac0b539"},{"url":"https://github.com/sparklemotion/nokogiri/commit/50f06b3efb638efb0abd95dc62dca05ae67882c2"},{"url":"https://github.com/sparklemotion/nokogiri/commit/7ffcd44d7e6c46704f8af0321d9314cd26e0e18a"},{"url":"https://github.com/sparklemotion/nokogiri/commit/8598060bacada41a0eb09d95c97744ff4e428f8e"},{"url":"https://github.com/sparklemotion/nokogiri/commit/babe75030c7f64a37826bb3342317134568bef61"},{"url":"https://github.com/sparklemotion/nokogiri/commit/bf22713507fe1fc3a2c4b525cf0a88c2dc87a3a2"},{"url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-7rrm-v45f-jp64"},{"url":"https://www.vulncheck.com/advisories/nokogiri-before-multiple-vulnerabilities-via-libxml2"}],"slug":"CVE-2021-47996","body":"## Overview\n\nRejected reason: This CVE ID has been rejected as a duplicate.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · updated 2026-09-08 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47996.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":3225,"id":"CVE-2021-47996","ts":1788883134703,"field":"cvss","old":null,"new":"7.5"},{"seq":3224,"id":"CVE-2021-47996","ts":1788883134703,"field":"severity","old":"none","new":"high"}]}