Stalwart
Monthly
OAuth authorization code hijacking in Stalwart Mail Server through v0.16.19 enables full email account takeover when a victim authenticates via a crafted phishing link. The validation routine for OAuth redirect URIs in the default shipped configuration - where client authentication is disabled - returns success immediately without comparing the supplied redirect_uri against any registered client destination, allowing any attacker-controlled URI to receive a valid authorization code. The CVSS 4.0 score of 8.5 with high confidentiality and integrity impact reflects the severity of resulting mailbox compromise; no public exploit code has been identified at time of analysis, though the vulnerability is fully described in a public GitHub issue with source-level detail.
Denial-of-service in Stalwart Mail Server versions 0.13.0 through 0.15.4 allows authenticated users to crash the server by sending a specially crafted email with malformed nested MIME parts through IMAP or JMAP, triggering infinite loops and resource exhaustion. The vulnerability requires valid credentials to exploit and public exploit code exists, but no patch is currently available for affected versions.
OAuth authorization code hijacking in Stalwart Mail Server through v0.16.19 enables full email account takeover when a victim authenticates via a crafted phishing link. The validation routine for OAuth redirect URIs in the default shipped configuration - where client authentication is disabled - returns success immediately without comparing the supplied redirect_uri against any registered client destination, allowing any attacker-controlled URI to receive a valid authorization code. The CVSS 4.0 score of 8.5 with high confidentiality and integrity impact reflects the severity of resulting mailbox compromise; no public exploit code has been identified at time of analysis, though the vulnerability is fully described in a public GitHub issue with source-level detail.
Denial-of-service in Stalwart Mail Server versions 0.13.0 through 0.15.4 allows authenticated users to crash the server by sending a specially crafted email with malformed nested MIME parts through IMAP or JMAP, triggering infinite loops and resource exhaustion. The vulnerability requires valid credentials to exploit and public exploit code exists, but no patch is currently available for affected versions.