{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-123487","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-06T00:44:37.658Z","datePublished":"2026-11-06T15:00:49.384Z","dateUpdated":"2026-11-06T17:14:55.801Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-06T15:00:49.384Z"},"datePublic":"2026-10-22T00:00:00.000Z","title":"Parse Server 9.0.0 before 9.10.7-alpha.1 ReDoS via Email Validation Regex","descriptions":[{"lang":"en","value":"Parse Server before 8.6.115 and 9.0.0 before 9.10.7-alpha.1 validates user email address format with a regular expression whose run time grows quadratically with input length and that is applied without a length limit. An unauthenticated attacker who knows the application ID can send a sign-up request, or a logged-in user can update their own email, with a long crafted email address to block the Node.js event loop and deny service to all clients."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Inefficient Regular Expression Complexity","cweId":"CWE-1333","type":"CWE"}]}],"affected":[{"vendor":"parse-community","product":"parse-server","defaultStatus":"unaffected","packageURL":"pkg:npm/parse-server","versions":[{"version":"9.0.0","status":"affected","versionType":"semver","lessThan":"9.10.7-alpha.1"},{"version":"9.10.7-alpha.1","status":"unaffected","versionType":"semver"}]},{"vendor":"parse-community","product":"parse-server","defaultStatus":"unaffected","packageURL":"pkg:npm/parse-server","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"8.6.115"},{"version":"8.6.115","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:*:*:*","versionStartIncluding":"9.0.0","versionEndExcluding":"9.10.7-alpha.1"},{"vulnerable":true,"criteria":"cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:*:*:*","versionEndExcluding":"8.6.115"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-9492-427f-466x","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-9492-427f-466x)"},{"name":"VulnCheck Advisory: Parse Server 9.0.0 before 9.10.7-alpha.1 ReDoS via Email Validation Regex","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.7-alpha.1-redos-via-email-validation-regex"}],"credits":[{"lang":"en","value":"0xma1ware","type":"reporter"},{"lang":"en","value":"mtrezza","type":"coordinator"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-06T17:11:55.570614Z","id":"CVE-2026-123487","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-06T17:14:55.801Z"}}]}}