{"id":"CVE-2023-30591","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-30591","generatedAt":"2026-11-04T22:54:56.853Z","title":"Denial-of-service in NodeBB <= v2.8.10 allows unauthenticated attackers to trigger a crash, when invoking `eventName.startsWith()` or `eventName.toString()`, while processing Socket.IO messages via crafted Socket.IO messages containing array or object…","description":"Denial-of-service in NodeBB <= v2.8.10 allows unauthenticated attackers to trigger a crash, when invoking `eventName.startsWith()` or `eventName.toString()`, while processing Socket.IO messages via crafted Socket.IO messages containing array or object type for the event name respectively.","published":"2023-09-29T06:15:10.000Z","lastModified":"2026-06-17T05:55:06.000Z","status":"Modified","sourceIdentifier":"info@starlabs.sg","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-241","CWE-754"],"affected":["nodebb/nodebb"],"epss":{"score":0.58692,"percentile":0.99105,"date":"2026-11-03","history":[{"date":"2026-09-30","score":0.58692,"percentile":0.99079}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 58.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://github.com/NodeBB/NodeBB/commit/37b48b82a4bc7680c6e4c42647209010cb239c2c","tags":["Patch"],"source":"info@starlabs.sg"},{"url":"https://github.com/NodeBB/NodeBB/commit/4d2d76897a02e7068ab74c81d17a2febfae8bfb9","tags":["Patch"],"source":"info@starlabs.sg"},{"url":"https://github.com/NodeBB/NodeBB/commit/830f142b7aea2e597294a84d52c05aab3a3539ca","tags":["Patch"],"source":"info@starlabs.sg"},{"url":"https://starlabs.sg/advisories/23/23-30591/","tags":["Third Party Advisory"],"source":"info@starlabs.sg"},{"url":"https://github.com/NodeBB/NodeBB/commit/37b48b82a4bc7680c6e4c42647209010cb239c2c","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/NodeBB/NodeBB/commit/4d2d76897a02e7068ab74c81d17a2febfae8bfb9","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/NodeBB/NodeBB/commit/830f142b7aea2e597294a84d52c05aab3a3539ca","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://starlabs.sg/advisories/23/23-30591/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-30591","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}