UBUNTU-CVE-2026-97873

In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 PKCS5 scheme 1 and PKCS12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before...

CVE-2026-97873 Legacy PBES1 and PKCS#12 PBE iteration count honoured unbounded in the raw JCA provider

In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 PKCS5 scheme 1 and PKCS12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before...

EUVD-2026-91987

In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 PKCS5 scheme 1 and PKCS12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before...

PT-2026-104565

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.86 Bouncy Castle for Java LTS versions prior to 2.73.13 Description Legacy PBES1 PKCS5 scheme 1 and PKCS12 PBE families in the raw JCA provider perform password-based key derivation using an iteration...

CVE-2026-97873: Allocation of Resources Without Limits or Throttling

In Bouncy Castle for Java before 1.86, the raw JCA provider's legacy PBES1 PKCS5 scheme 1 and PKCS12 PBE families ran their password-based key derivation with an iteration count taken from untrusted input without bounding it, so a small input could dictate an arbitrary amount of work before...

CVE-2026-6669 Unbounded SCRAM iteration count causes CPU exhaustion in PgBouncer

Missing upper bound on the key derivation iteration count accepted during SCRAM authentication to a backend server in PgBouncer through 1.25.2 allows a malicious or compromised PostgreSQL backend to cause uncontrolled CPU consumption in PgBouncer. The resulting key derivation cannot be interrupte...

EUVD-2026-85364

Missing upper bound on the key derivation iteration count accepted during SCRAM authentication to a backend server in PgBouncer through 1.25.2 allows a malicious or compromised PostgreSQL backend to cause uncontrolled CPU consumption in PgBouncer. The resulting key derivation cannot be interrupte...

CVE-2026-13586

A flaw was found in Bouncy Castle for Java. This vulnerability allows a remote attacker to cause a Denial of Service DoS by exploiting an iteration-count bound issue in the PKCS12 Message Authentication Code MAC and bag-decryption Key Derivation Function KDF. This could make the affected system...

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...

CVE-2026-59647

A flaw was found in Bouncy Castle for Java. The Certificate Request Message Format CRMF and Certificate Management Protocol CMP password-based Message Authentication Code MAC implementation allows for an unbounded iteration count. A remote attacker can exploit this by sending a specially crafted...

postgres-protocol: Unbounded SCRAM iteration count allows a malicious server to cause CPU-exhaustion denial of service

A malicious, compromised, or man-in-the-middle server can supply an arbitrarily large SCRAM-SHA-256 PBKDF2 iteration count during authentication. The client runs it inline with no upper bound, pinning a tokio worker thread for minutes per connection, possibly stalling the whole async runtime...

GHSA-5X78-73V4-XG6W postgres-protocol: Unbounded SCRAM iteration count allows a malicious server to cause CPU-exhaustion denial of service

A malicious, compromised, or man-in-the-middle server can supply an arbitrarily large SCRAM-SHA-256 PBKDF2 iteration count during authentication. The client runs it inline with no upper bound, pinning a tokio worker thread for minutes per connection, possibly stalling the whole async runtime...

GO-2026-6168 WITHDRAWN: Unbounded iteration count causes CPU denial of service in github.com/lib/pq/scram

This report has been withdrawn with reason: "Report mistakenly added without having CVE / GHSA associated". The SCRAM client in github.com/lib/pq/scram accepts an attacker-controlled iteration count with no upper bound and immediately performs that many PBKDF2-style HMAC rounds. A PostgreSQL...

CVE-2026-14672

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scramiterations count, because the authentication challenge for a...

ALPINE-CVE-2026-14672

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scramiterations count, because the authentication challenge for a...

CVE-2026-14672

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scramiterations count, because the authentication challenge for a...

CVE-2026-14672

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scramiterations count, because the authentication challenge for a...

EUVD-2026-57838

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scramiterations count, because the authentication challenge for a...

ruby/net-imap: ruby: Net::IMAP: Denial of Service via large iteration count in SCRAM authentication

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...

ruby/net-imap: ruby: Net::IMAP: Denial of Service via large iteration count in SCRAM authentication

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...