{"apiVersion":"1.0","identifier":"CVE-2026-62317","description":"Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto-s email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when blockSubaddressing was enabled. The permissive emailRegEx accepted multiple at signs and regular expression metacharacters, and POST /api/experience/verification/verification-code could therefore cause catastrophic backtracking in subaddressingRegex.test(email). The resulting event-loop stall could make authentication, token issuance, SSO, and the administrative console unavailable. This issue is fixed in version 1.41.0.","publishedAt":"2026-08-19T20:17:19","lastModifiedAt":"2026-08-21T20:16:38","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-62317","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","epssProbability":0.00522,"riskScore":0.79,"affectedProduct":"Logto","affectedVersions":"<1.41.0","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-62317","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-62317","en":"https://www.redsauce.net/en/cves/CVE-2026-62317","fr":"https://www.redsauce.net/fr/cves/CVE-2026-62317","pt":"https://www.redsauce.net/pt/cves/CVE-2026-62317","de":"https://www.redsauce.net/de/cves/CVE-2026-62317","sk":"https://www.redsauce.net/sk/cves/CVE-2026-62317","el":"https://www.redsauce.net/el/cves/CVE-2026-62317"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-62317"}}