CVE-2026-6681 PKCS#7 decode ignores caller output buffer size, writing past buffer bounds

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. This affects wolfSSL 5.9.0 and earlier and was fixed in the 5.9.1 release...

CVE-2026-11310 X.509 trust-chain bypass in wolfSSL_X509_verify_cert() via untrusted intermediate anchoring

X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra OPENSSLEXTRA and whose application validates certificates by calling X509verifycert with caller-supplied untrusted intermediate certificates; for...

CVE-2026-11310

The CVE-2026-11310 entry concerns wolfSSL’s X509_verify_cert() when built with --enable-opensslextra (OPENSSL_EXTRA) and used by applications that pass untrusted intermediates to X509_verify_cert(). The root cause is that wolfSSL temporarily loads untrusted intermediates into the certificate mana...

CVE-2026-6291

Bleichenbacher padding oracle in PKCS7 KTRI decryption. When decrypting PKCS7 EnvelopedData using RSA PKCS1 v1.5 key transport, wolfSSL returned distinguishable error codes depending on whether RSA padding validation failed versus whether the decrypted content was malformed. An attacker able to...

CVE-2026-11999

X.509 trust-chain bypass path-depth exhaustion in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra whose application calls X509verifycert with caller-supplied untrusted intermediates; for those users it is critical, otherwis...

UBUNTU-CVE-2026-55961

wolfSSLPKCS7verify returning success for a degenerate certs-only PKCS7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no...

EUVD-2026-39496

X.509 trust-chain bypass path-depth exhaustion in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra whose application calls X509verifycert with caller-supplied untrusted intermediates; for those users it is critical, otherwis...

CVE-2026-11999

CVE-2026-11999 affects wolfSSL when built with --enable-opensslextra. The X509_verify_cert() path-depth exhaustion in wolfSSL_X509_verify_cert() can allow an attacker-controlled certificate to be accepted if the caller supplies untrusted intermediates and the chain depth exceeds the verifier’s ma...

CVE-2026-11999 X.509 trust-chain bypass via path-depth exhaustion in wolfSSL_X509_verify_cert()

X.509 trust-chain bypass path-depth exhaustion in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra whose application calls X509verifycert with caller-supplied untrusted intermediates; for those users it is critical, otherwis...

CVE-2026-11999

X.509 trust-chain bypass path-depth exhaustion in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra whose application calls X509verifycert with caller-supplied untrusted intermediates; for those users it is critical, otherwis...

CVE-2026-55961 wolfSSL_PKCS7_verify() reports success for degenerate (certs-only) PKCS#7 with no signer

wolfSSLPKCS7verify returning success for a degenerate certs-only PKCS7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no...

CVE-2026-55961

The CVE describes a flaw in wolfSSL where wolfSSL_PKCS7_verify() incorrectly reported success for a degenerate PKCS#7 object that contains no signer. In such objects, signerInfos is empty, so underlying signed-data verification could succeed without authenticating any content. The fix enforces th...

CVE-2026-6091

Partial-chain certificate verification may accept chains that terminate at a peer-supplied, untrusted intermediate certificate rather than a trusted anchor. An attacker could present a chain that ends at an intermediate they control and have it accepted as valid. This affects the OpenSSL...

CVE-2026-6091

Partial-chain certificate verification may accept chains that terminate at a peer-supplied, untrusted intermediate certificate rather than a trusted anchor. An attacker could present a chain that ends at an intermediate they control and have it accepted as valid. This affects the OpenSSL...

CVE-2026-6291

Bleichenbacher padding oracle in PKCS7 KTRI decryption. When decrypting PKCS7 EnvelopedData using RSA PKCS1 v1.5 key transport, wolfSSL returned distinguishable error codes depending on whether RSA padding validation failed versus whether the decrypted content was malformed. An attacker able to...

CVE-2026-6291 Bleichenbacher padding oracle in PKCS#7 KTRI RSA PKCS#1 v1.5 decryption

Bleichenbacher padding oracle in PKCS7 KTRI decryption. When decrypting PKCS7 EnvelopedData using RSA PKCS1 v1.5 key transport, wolfSSL returned distinguishable error codes depending on whether RSA padding validation failed versus whether the decrypted content was malformed. An attacker able to...

PT-2026-52563

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description An X.509 trust-chain bypass exists in the OpenSSL compatibility certificate verifier function wolfSSL X509 verify cert. This issue occurs in builds configured with --enable-opensslextra OPENS...

PT-2026-52623

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description A configuration issue occurs when WOLFSSL IP ALT NAME is not defined, leading to a bypass of iPAddress name constraints. In this state, the software fails to enforce IP address constraints se...

PT-2026-52587

Name of the Vulnerable Software and Affected Versions wolfSSL versions prior to 5.9.1 Description A heap buffer overflow occurs in the DTLS 1.3 ACK serialization path before the connecting peer is authenticated. The issue stems from an integer truncation when calculating the length of the ACK...

PT-2026-52590

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description A length-confusion issue exists in the wolfSSL OCSP resp find status function. The lookup process compares serial-number bytes without verifying that the two serial numbers are of equal lengt...