CVE-2026-8169

ExtremeXOS EXOS uses a challenge-response mechanism to authorize access to the privileged debug-mode function. The challenge value is generated using an insufficiently random source, which under certain conditions may allow an attacker to predict the expected response and activate debug-mode...

CVE-2026-63886 scsi: target: iscsi: Validate CHAP_R length before base64 decode

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Validate CHAPR length before base64 decode chapservercomputehash allocates clientdigest as kzallocchap-digestsize and then, for BASE64-encoded responses, passes chapr directly to chapbase64decode without...

[SECURITY] Fedora 44 Update: ongres-scram-3.3-1.fc44

This is a Java implementation of SCRAM Salted Challenge Response Authentication Mechanism which is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. It is described as part of RFC 5802 and RFC7677...

[SECURITY] Fedora 43 Update: ongres-scram-3.3-1.fc43

This is a Java implementation of SCRAM Salted Challenge Response Authentication Mechanism which is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. It is described as part of RFC 5802 and RFC7677...

CVE-2026-47165

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, the distributed pixel cache was originally designed to operate without a challenge–response authentication model. This has been changed in versions 6.9.13-48 an...

CVE-2026-47165

ImageMagick CVE-2026-47165 (and CVE-2026-47166) affect versions prior to 6.9.13-48 and 7.1.2-23 where the distributed pixel cache lacked a challenge–response authentication model, enabling local attackers with high privileges to access sensitive pixel data. Additionally, CVE-2026-47166 describes ...

jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication

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...

ImageMagick: Information Disclosure in distributed pixel cache server because it is not using a challenge–response authentication model

The distributed pixel cache was originally designed to operate without a challenge–response authentication model. However, given today’s heightened security expectations, we have changed our implementation...

GHSA-2RGJ-GX5X-F62W ImageMagick: Information Disclosure in distributed pixel cache server because it is not using a challenge–response authentication model

The distributed pixel cache was originally designed to operate without a challenge–response authentication model. However, given today’s heightened security expectations, we have changed our implementation...

PT-2026-42813

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description The distributed pixel cache was originally designed to operate without a challenge-response authentication model, which is a security mechanism where one party...

jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication

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...

Linux Distros Unpatched Vulnerability : CVE-2026-33603

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to...

CVE-2026-42256

A flaw was found in Net::IMAP, a Ruby library for Internet Message Access Protocol IMAP client functionality. A hostile server can exploit this vulnerability during SCRAM-SHA1 or SCRAM-SHA256 Salted Challenge Response Authentication Mechanism - Secure Hash Algorithm 1 or 256 authentication by...

SUSE CVE-2026-33603

Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and...

PgBouncer buffer overflow in SCRAM

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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...

CVE-2026-42256

Net::IMAP (Ruby) is affected by a Denial of Service when authenticating with SCRAM-SHA1/SCRAM-SHA256 if a hostile server sends a very high iteration count. Affected versions: 0.4.0–0.4.23, 0.5.0–0.5.13, 0.6.0–0.0.6. Wait that seems wrong: fix lists are 0.4.24, 0.5.14, 0.6.4. Corrected: Affected r...

CVE-2026-42256 net-imap: Denial of service via high iteration count for `SCRAM-*` authentication

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-2026-6665

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...

CVE-2026-6665 PgBouncer buffer overflow in SCRAM

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...