CVE-2026-55666
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Rocket.Chat: Email Parameter Fallback Leads To Account Takeover Within Apple OAuth
Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13, in apps/meteor/app/apple/server/loginHandler.ts, handleIdentityToken parses a JWT issued by Apple during the OAuth flow. The try block checks for an email parameter. If the JWT does not contain an email address, the application falls back to accepting an arbitrary email value supplied directly in the request. Attackers are able to forge Apple JWTs that do not contain an email address and leverage this vulnerability to carry out account takeover attacks. This vulnerability is fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Rocket.Chat
- Vendor
- RocketChat
- Product
- Rocket.Chat
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| >= 8.5.0-rc.0, < 8.5.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 8.4.0-rc.0, < 8.4.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 8.3.0-rc.0, < 8.3.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 8.2.0-rc.0, < 8.2.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 8.1.0-rc.0, < 8.1.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 7.11.0-rc.0, < 8.0.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| < 7.10.13 | affected | Unavailable | Unavailable | Unavailable | None listed |