GHSA-63WG-WJJJ-7CP8 Zebra Address Book Aborted by IPv4-Mapped Mempool Misbehavior Update

Am I affected You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node listens on the default :: address on a Linux host the standard deployment configuration — net.ipv6.bindv6only=0 is the default on all common Linux distributions. 3. Your node is synced near the chain tip...

Zebra has pre-handshake buffer capacity reservation based on attacker-claimed body length

Am I affected You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node accepts inbound P2P connections network.listenaddr is set, which is the default. Summary The P2P codec's Codec::decode method calls src.reservebodylen + HEADERLEN after parsing a 24-byte protocol header,...

GHSA-H72H-PPCX-998P Zebra has pre-handshake buffer capacity reservation based on attacker-claimed body length

Am I affected You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node accepts inbound P2P connections network.listenaddr is set, which is the default. Summary The P2P codec's Codec::decode method calls src.reservebodylen + HEADERLEN after parsing a 24-byte protocol header,...

CVE-2026-54891

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

CVE-2026-54887

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

UBUNTU-CVE-2026-54891

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

CVE-2026-54891

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

CVE-2026-54891 Plaintext APPLICATION_DATA injected during TLS handshake delivered to client application post-handshake in ssl

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

CVE-2026-54891

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

CVE-2026-54891 Plaintext APPLICATION_DATA injected during TLS handshake delivered to client application post-handshake in ssl

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

EUVD-2026-41415

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

EEF-CVE-2026-54891 Plaintext APPLICATION_DATA injected during TLS handshake delivered to client application post-handshake in ssl

Summary Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server...

CVE-2026-54891 Plaintext APPLICATION_DATA injected during TLS handshake delivered to client application post-handshake in ssl

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

CVE-2026-54891

The CVE-2026-54891 entry concerns Erlang/OTP ssl (tls_gen_connection.erl) where a network-positioned attacker can inject unauthenticated plaintext during TLS handshake. The tls_gen_connection:handle_protocol_record/3 function rejects APPLICATION_DATA in pre-handshake when acting as a server, but ...

EEF-CVE-2026-55952 TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension

Summary The Erlang/OTP ssl application does not validate that the PSK identity list and binder list carried in a TLS 1.3 ClientHello pre-shared key extension have equal length before passing them to the session ticket handler. In tls\handshake\1\3:handle\pre\shared\key/3, an OfferedPreSharedKeys...

CVE-2026-54887

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

EEF-CVE-2026-54887 DTLS server cookie bypass during startup window due to empty initial cookie secret

Summary Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtls\server\connection:initial\hello/3 initializes previous\cookie\secret...

CVE-2026-54887

CVE-2026-54887 concerns Erlang/OTP's DTLS server in ssl, where during startup the cookie secret is initialized to an empty binary instead of a random value. This makes DTLS cookie computation deterministic for the first 0–15 seconds, allowing an observer of plaintext ClientHello to forge a valid ...

EUVD-2026-41411

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

PT-2026-55367

Am I affected You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node listens on the default :: address on a Linux host the standard deployment configuration — net.ipv6.bindv6only=0 is the default on all common Linux distributions. 3. Your node is synced near the chain tip...