CVE-2026-123487High· 7.5▾ TwilightParse 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.4%
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.
parse-server >= 9.0.0 < 9.10.7-alpha.1parse-server < 8.6.115Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-120310Low· 3.1Parse Server before 8.6.109 and 9.0.0 before 9.10.6-alpha.1 Information Disclosure via Object Update Response
CVE-2026-122301Low· 3.1Parse Server before 8.6.114 and 9.0.0 before 9.10.6-alpha.6 Information Disclosure via Object Create Response
CVE-2026-119571Low· 3.7Parse Server 9.7.0 before 9.10.5-alpha.10 Installation Update Misdirection via Installation ID
CVE-2026-121965Medium· 5.3Parse Server before 8.6.113 and 9.10.6-alpha.5 Prototype Pollution via Dot Notation Key
CVE-2026-121413Low· 3.1Parse Server before 8.6.112 and 9.0.0 before 9.10.6-alpha.4 Session Permission Bypass via upgradeToRevocableSession
CVE-2026-121414Medium· 5.9Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2 Denial of Service via afterSave Pointer Update