165 matches found
Unity Linux 20.1060e / 20.1070e Security Update: fetchmail (UTSA-2026-017438)
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017438 advisory. Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH. Tenable has extracted...
Unity Linux 20.1060e / 20.1070e Security Update: curl (UTSA-2026-017570)
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017570 advisory. When curl = 7.20.0 and = 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to upgrade to TLS security, the server can respond and send back...
DEBIAN-CVE-2026-42257
Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, several Net::IMAP commands accept a raw string argument that is sent to the server without validation or escaping. If this string is derived from user-controlled...
DEBIAN-CVE-2026-42245
Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are...
DEBIAN-CVE-2026-42246
Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAPstarttls to return "successfully", without starting TLS. This issue has been patched in versions 0.3.10,...
CVE-2026-42256
Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0 to before 0.6.4, when authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational...
EUVD-2026-28927
Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched ...
CVE-2026-43860
A flaw was found in mutt. During the IMAP CRAM-MD5 Challenge-Response Authentication Mechanism - Message-Digest Algorithm 5 authentication, the password hash is truncated by one byte. This issue could allow a remote attacker to potentially bypass authentication, leading to unauthorized access...
CVE-2026-43862
A flaw was found in mutt, an email client. The imapauthgss security level, which is used for secure IMAP Internet Message Access Protocol authentication, is mishandled. This vulnerability could allow an attacker to bypass certain security protections, potentially leading to a low impact on data...
CLSA-2026-1777977059 dovecot: Fix of CVE-2026-27857
CVE-2026-27857: limit the number of open IMAP parser lists in imap-login to prevent excessive memory usage from deeply nested parentheses e.g. NOOP...
GHSA-HM49-WCQC-G2XG net-imap vulnerable to command Injection via "raw" arguments to multiple commands
Summary Several Net::IMAP commands accept a raw string argument that is sent to the server without validation or escaping. If this string is derived from user-controlled input, it may contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. Details Net::IMAP's...
GHSA-Q2MW-FVJ9-VVCW net-imap has quadratic complexity when reading response literals
Summary Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. Details For each literal in a response, ResponseReader...
EUVD-2026-26896
mutt before 2.3.2 sometimes truncates the hashpasswd by one byte for IMAP authcram MD5 digest...
EUVD-2026-26895
mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP authcram MD5 digest...
CVE-2026-43859
mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP authcram MD5 digest...
PT-2026-36772
Name of the Vulnerable Software and Affected Versions mutt versions prior to 2.3.2 Description The software sometimes uses the strfcpy function instead of memcpy when handling the IMAP auth cram MD5 digest. This occurs during the authentication process for IMAP servers using the CRAM-MD5 mechanis...
PT-2026-36986
Name of the Vulnerable Software and Affected Versions Net::IMAP affected versions not specified Description Net::IMAP::ResponseReader exhibits quadratic time complexity when processing large responses containing numerous string literals. A hostile server can send specially crafted responses that...
CVE-2026-4873
A flaw was found in curl. A remote attacker could exploit this by initiating an unencrypted connection via IMAP, SMTP, or POP3 and then making a subsequent request to the same host that requires Transport Layer Security TLS. Due to incorrect connection reuse, the subsequent request would bypass t...
CVE-2026-40566 FreeScout vulnerable to SSRF via IMAP/SMTP Connection Test Endpoints
FreeScout is a free self-hosted help desk and shared mailbox. Versions prior to 1.8.213 have a Server-Side Request Forgery SSRF vulnerability in the IMAP/SMTP connection test functionality of FreeScout's MailboxesController. Three AJAX actions fetchtest line 731, sendtest line 682, and imapfolder...
thunderbird: Out of bounds read in IMAP parsing
A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or connection to a mail server were...