net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS

A flaw was found in the Ruby net-imap library. When upgrading a cleartext IMAP connection to TLS using the Net::IMAPstarttls method, the library improperly handles certain responses received during STARTTLS negotiation. A man-in-the-middle MITM attacker can inject a predicted tagged OK response...

net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS

A flaw was found in the Ruby net-imap library. When upgrading a cleartext IMAP connection to TLS using the Net::IMAPstarttls method, the library improperly handles certain responses received during STARTTLS negotiation. A man-in-the-middle MITM attacker can inject a predicted tagged OK response...

net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS

A flaw was found in the Ruby net-imap library. When upgrading a cleartext IMAP connection to TLS using the Net::IMAPstarttls method, the library improperly handles certain responses received during STARTTLS negotiation. A man-in-the-middle MITM attacker can inject a predicted tagged OK response...

net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS

A flaw was found in the Ruby net-imap library. When upgrading a cleartext IMAP connection to TLS using the Net::IMAPstarttls method, the library improperly handles certain responses received during STARTTLS negotiation. A man-in-the-middle MITM attacker can inject a predicted tagged OK response...

net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS

A flaw was found in the Ruby net-imap library. When upgrading a cleartext IMAP connection to TLS using the Net::IMAPstarttls method, the library improperly handles certain responses received during STARTTLS negotiation. A man-in-the-middle MITM attacker can inject a predicted tagged OK response...

net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS

A flaw was found in the Ruby net-imap library. When upgrading a cleartext IMAP connection to TLS using the Net::IMAPstarttls method, the library improperly handles certain responses received during STARTTLS negotiation. A man-in-the-middle MITM attacker can inject a predicted tagged OK response...

USN-8478-1: Ruby vulnerabilities

It was discovered that Ruby's Net::IMAP library did not properly verify that TLS encryption was started after issuing a STARTTLS command. A remote attacker could use this to perform a machine-in-the-middle attack and silently bypass TLS encryption. CVE-2026-42246 It was discovered that Ruby's...

CVE-2026-8286

A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not...

Curl 7.30.0 < 8.21.0 Wrong STARTTLS Connection Reuse

The version of curl installed on the remote host is 7.30.0 prior to 8.21.0. It is, therefore, affected by an improper certificate validation vulnerability: - A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even thoug...

SUSE 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,...

CURL-CVE-2026-8286 wrong STARTTLS connection reuse

A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not...

openSUSE 16 Security Update : cyrus-imapd (openSUSE-SU-2026:20962-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20962-1 advisory. Changes in cyrus-imapd: - cyrus-imapd don't start because of missing Requires=var-run.mount from systemd bsc1251788 Remove var-run.mount from...

Security update for cyrus-imapd (important)

openSUSE security update: security update for cyrus-imapd ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:20962-1 Rating: important References: bsc1241536 bsc1241543 bsc1246165 bsc1251788 Cross-References: CVE-2025-23394 CVE-2025-49812 CVSS scores:...

Security update for cyrus-imapd (important)

openSUSE Security Update: Security update for cyrus-imapd Announcement ID: openSUSE-SU-2026:0204-1 Rating: important References: 1241536 1241543 1246165 1251788 Cross-References: CVE-2025-23394 CVE-2025-49812 CVSS scores: CVE-2025-49812 SUSE: 8.3...

Fedora 44 : python-django5 (2026-e4146022ce)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e4146022ce advisory. Fixes five low-severity CVEs - CVE-2026-6873: Signed cookie salt namespace collision - CVE-2026-7666: Potential unencrypted email transmission via...

openSUSE 16 Security Update : python-Django (openSUSE-SU-2026:20937-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20937-1 advisory. Changes in python-Django: - CVE-2026-6873: Signed cookie salt namespace collision bsc1267578 - CVE-2026-7666: Potential unencrypted email...

Security update for python-Django

This update for python-Django fixes the following issues CVE-2026-6873: signed cookie salt namespace collision in django.http.HttpRequest.getsignedcookie bsc1267578. CVE-2026-7666: potential unencrypted email transmission via STARTTLS in the SMTP backend bsc1267579. CVE-2026-8404: potential...

SUSE-SU-2026:2318-1 Security update for python-Django

This update for python-Django fixes the following issues - CVE-2026-6873: signed cookie salt namespace collision in django.http.HttpRequest.getsignedcookie bsc1267578. - CVE-2026-7666: potential unencrypted email transmission via STARTTLS in the SMTP backend bsc1267579. - CVE-2026-8404: potential...

Use of Less Trusted Source

Overview offlineimap is an IMAP synchronization tool Affected versions of this package are vulnerable to Use of Less Trusted Source due to trusting the server's STARTTLS capability before authentication. An attacker can intercept and manipulate the connection by performing a man-in-the-middle...

CVE-2020-37248

OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext...