WolfSSL wolfSSL PKCS#7 OtherRecipientInfo integer underflow vulnerability

Summary A integer underflow vulnerability exists in the PKCS7 OtherRecipientInfo functionality of wolfSSL versions: 5.9.1. A specially crafted malformed ASN.1 record can lead to a heap buffer overflow. An attacker can arbitrary code execution to trigger this vulnerability. Confirmed Vulnerable...

Linux Distros Unpatched Vulnerability : CVE-2026-10097

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wolfSSL's AVX2-optimized ML-KEM implementation mlkemcmpavx2 compares only 1536 of the 1568 ciphertext bytes during the Fujisaki-Okamoto re-encryption check in...

Linux Distros Unpatched Vulnerability : CVE-2026-6291

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bleichenbacher padding oracle in PKCS7 KTRI decryption. When decrypting PKCS7 EnvelopedData using RSA PKCS1 v1.5 key transport, wolfSSL returned distinguishable...

Linux Distros Unpatched Vulnerability : CVE-2026-11310

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra OPENSSLEXT...

Linux Distros Unpatched Vulnerability : CVE-2026-7532

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - iPAddress name constraints bypass when WOLFSSLIPALTNAME is not defined. IP address name constraints are not enforced in that configuration, allowing a certifica...

Linux Distros Unpatched Vulnerability : CVE-2026-6681

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The PKCS7 decode path ignores the caller-supplied output buffer size outputSz, allowing decoded content to be written past the bounds of the provided buffer. Th...

Linux Distros Unpatched Vulnerability : CVE-2026-10098

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - OCSP CertID serial-number length-confusion in wolfSSLOCSPrespfindstatus allows a same-issuer SingleResponse whose serial is a prefix of the target serial to be...

Linux Distros Unpatched Vulnerability : CVE-2026-8720

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wcBlake2bHmacFinal and wcBlake2sHmacFinal discard the message when the key length exceeds the block size, producing a MAC that is independent of the input. When...

Linux Distros Unpatched Vulnerability : CVE-2026-6679

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A heap buffer overflow could occur in the DTLS 1.3 ACK serialization path before the connecting peer is authenticated. The buffer overflow was due to an integer...

wolfSSL Python module vulnerable to Improper Authentication

A vulnerability in the handling of verifymode = CERTREQUIRED in the wolfssl Python package wolfssl-py causes client certificate requirements to not be fully enforced.Because the WOLFSSLVERIFYFAILIFNOPEERCERT flag was not included, the behavior effectively matched CERTOPTIONAL: a peer certificate...

PYSEC-2026-575 wolfSSL Python module vulnerable to Improper Authentication

A vulnerability in the handling of verifymode = CERTREQUIRED in the wolfssl Python package wolfssl-py causes client certificate requirements to not be fully enforced. Because the WOLFSSLVERIFYFAILIFNOPEERCERT flag was not included, the behavior effectively matched CERTOPTIONAL: a peer certificate...

PT-2026-53644

A vulnerability in the handling of verify mode = CERT REQUIRED in the wolfssl Python package wolfssl-py causes client certificate requirements to not be fully enforced. Because the WOLFSSL VERIFY FAIL IF NO PEER CERT flag was not included, the behavior effectively matched CERT OPTIONAL: a peer...

curl: mbedTLS / wolfSSL / rustls backends silently skip hostname verification when CURLOPT_SSL_VERIFYPEER=0

Summary When an application sets CURLOPTSSLVERIFYPEER=0 while keeping CURLOPTSSLVERIFYHOST=2 the default, the mbedTLS, wolfSSL, and rustls TLS backends silently skip the hostname-vs-certificate check. The OpenSSL, GnuTLS, and Schannel backends correctly preserve hostname checking under the same...

EUVD-2026-39579

wcBlake2bHmacFinal and wcBlake2sHmacFinal discard the message when the key length exceeds the block size, producing a MAC that is independent of the input. When the supplied key is longer than the BLAKE2 block size the key-hashing branch reinitialized the running hash state, discarding the...

CVE-2026-8720

wcBlake2bHmacFinal and wcBlake2sHmacFinal discard the message when the key length exceeds the block size, producing a MAC that is independent of the input. When the supplied key is longer than the BLAKE2 block size the key-hashing branch reinitialized the running hash state, discarding the...

DEBIAN-CVE-2026-8720

wcBlake2bHmacFinal and wcBlake2sHmacFinal discard the message when the key length exceeds the block size, producing a MAC that is independent of the input. When the supplied key is longer than the BLAKE2 block size the key-hashing branch reinitialized the running hash state, discarding the...

DEBIAN-CVE-2026-7532

iPAddress name constraints bypass when WOLFSSLIPALTNAME is not defined. IP address name constraints are not enforced in that configuration, allowing a certificate to bypass an issuing CA's IP address constraints...

CVE-2026-7532

iPAddress name constraints bypass when WOLFSSLIPALTNAME is not defined. IP address name constraints are not enforced in that configuration, allowing a certificate to bypass an issuing CA's IP address constraints...

CVE-2026-8720

wcBlake2bHmacFinal and wcBlake2sHmacFinal discard the message when the key length exceeds the block size, producing a MAC that is independent of the input. When the supplied key is longer than the BLAKE2 block size the key-hashing branch reinitialized the running hash state, discarding the...

CVE-2026-55962

TLS 1.3 post-handshake authentication PHA issue where a server could accept a client's Finished message without the client having sent a Certificate and CertificateVerify. The post-handshake-auth exemption that allows an empty/absent peer certificate was only intended for the initial handshake, b...