CVE-2026-42256: Use of Blocking Code in Single-threaded, Non-blocking Context

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...

CVE-2026-6664: Integer Overflow or Wraparound

An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet...

CVE-2026-6665: Stack-based Buffer Overflow

The SCRAM code in PgBouncer before 1.25.2 did not check the return value of strlcat correctly when building the contents of the SCRAM client-final-message. A malicious backend that sends a SCRAM server-final-message with a long nonce can trigger a stack overflow...

Linux Distros Unpatched Vulnerability : CVE-2026-6665

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The SCRAM code in PgBouncer before 1.25.2 did not check the return value of strlcat correctly when building the contents of the SCRAM client-final-message. A...

Linux Distros Unpatched Vulnerability : CVE-2026-6664

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote...

PT-2026-39227

Name of the Vulnerable Software and Affected Versions PgBouncer versions prior to 1.25.2 Description The SCRAM code fails to correctly check the return value of the strlcat function when constructing the SCRAM client-final-message. A malicious backend can trigger a stack overflow by sending a SCR...

PT-2026-39226

Name of the Vulnerable Software and Affected Versions PgBouncer versions prior to 1.25.2 Description An integer overflow in the network packet parsing code allows an unauthenticated remote attacker to bypass a boundary check. By sending a malformed SCRAM authentication packet, the attacker can...

Ruby net-imap 0.4.x < 0.4.24 / 0.5.x < 0.5.14 / 0.6.x < 0.6.4 vulnerability

The version of the net-imap Ruby library installed on the remote host is prior to 0.4.x prior to 0.4.24, 0.5.x prior to 0.5.14, or 0.6.x prior to 0.6.4. It is, therefore, affected by a computational denial-of-service vulnerability. A denial of service vulnerability exists when authenticating a...

SUSE CVE-2026-42198

pgjdbc is an open source postgresql JDBC Driver. From version 42.2.0 to before version 42.7.11, pgjdbc is vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. A malicious server can instruct the driver to perform SCRAM authentication with a very large iteration count...

EUVD-2026-26247

pgjdbc: Unbounded PBKDF2 iterations in SCRAM authentication allows CPU exhaustion DoS...

pgjdbc: Unbounded PBKDF2 iterations in SCRAM authentication allows CPU exhaustion DoS

Summary pgjdbc is vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. Impact A malicious server can instruct the driver to perform SCRAM authentication with a very large iteration count. With a large enough value, the client spends an unbounded amount of CPU time...

GHSA-98QH-XJC8-98PQ pgjdbc: Unbounded PBKDF2 iterations in SCRAM authentication allows CPU exhaustion DoS

Summary pgjdbc is vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. Impact A malicious server can instruct the driver to perform SCRAM authentication with a very large iteration count. With a large enough value, the client spends an unbounded amount of CPU time...

CVE-2026-42198

A flaw was found in pgjdbc, an open-source PostgreSQL JDBC Driver. A malicious server can exploit this vulnerability by instructing the driver to perform SCRAM-SHA-256 Salted Challenge Response Authentication Mechanism Secure Hash Algorithm 256 authentication with an excessively large iteration...

GHSA-87PF-FPWV-P7M7 net-imap vulnerable to denial of service via high iteration count for `SCRAM-*` authentication

Summary When authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. Details A hostile IMAP server can send an arbitrarily large PBKDF2 iteration count in the...

Use of Blocking Code in Single-threaded, Non-blocking Context

Overview Affected versions of this package are vulnerable to Use of Blocking Code in Single-threaded, Non-blocking Context through the OpenSSL::KDF.pbkdf2hmac function during SCRAM authentication. An attacker can cause the Ruby client VM to become unresponsive by sending a large iteration count...

CVE-2026-40542

A flaw was found in Apache HttpClient. This vulnerability allows a remote attacker to bypass a critical step in the SCRAM-SHA-256 authentication process. By exploiting this, an attacker can trick the client into accepting authentication without proper mutual verification, potentially compromising...

net-imap vulnerable to denial of service via high iteration count for `SCRAM-*` authentication

Summary When authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. Details A hostile IMAP server can send an arbitrarily large PBKDF2 iteration count in the...

Allocation of Resources Without Limits or Throttling

Overview org.postgresql:postgresql is a Java JDBC 4.2 JRE 8+ driver for PostgreSQL database. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling during the client-side SCRAM-SHA-256 authentication. An attacker can cause excessive CPU consumptio...

CVE-2026-42198

pgjdbc is an open source postgresql JDBC Driver. From version 42.2.0 to before version 42.7.11, pgjdbc is vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. A malicious server can instruct the driver to perform SCRAM authentication with a very large iteration count...

CVE-2026-42198

pgjdbc is an open source postgresql JDBC Driver. From version 42.2.0 to before version 42.7.11, pgjdbc is vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. A malicious server can instruct the driver to perform SCRAM authentication with a very large iteration count...