Erlang/OTP -- multiple vulnerabilities in ssl, inets, public_key and snmp

The Erlang/OTP project reports: OTP 29.1.2, 28.5.0.8 and 27.3.4.19 fix the following issues, three of which complete earlier incomplete fixes: CVE-2026-105236: DTLS-1.2 session resumption could cross SNI virtual-host boundaries. An SNI-aware server resumed a cached session even when the resumptio...

Security Bulletin:Improper Certificate Validation in Erlang OTP public_key: DNS NameConstraints Bypass in TLS Hostname Verification

Summary Improper Certificate Validation vulnerability in Erlang OTP publickey pubkeycert and publickey modules allows a DNS nameConstraints bypass via subject CommonName fallback in TLS hostname verification. Two flaws combine to allow a subordinate CA whose DNS nameConstraints are restricted e.g...

erlang: Erlang OTP: Authentication bypass due to improper OCSP certificate validation

A flaw was found in Erlang OTP's publickey application, specifically in the Online Certificate Status Protocol OCSP response verification. A remote attacker who has obtained the private key of an expired Certificate Authority CA-designated OCSP responder certificate can forge OCSP responses. This...

erlang: Erlang OTP public_key: Certificate validation bypass allows hostname spoofing

A flaw was found in Erlang OTP publickey. This improper certificate validation vulnerability allows a subordinate Certificate Authority CA with restricted DNS nameConstraints to bypass these restrictions. By issuing a leaf certificate that lacks a Subject Alternative Name SAN but contains a craft...

erlang: Erlang OTP public_key: Certificate chain forgery via improper trust chain validation

A flaw was found in Erlang OTP's publickey module. This vulnerability CWE-295, related to improper certificate validation, allows a non-Certificate Authority CA certificate to be accepted as an intermediate issuer. A remote attacker, holding an end-entity certificate issued by a trusted CA, can...

erlang: Erlang OTP public_key: Certificate chain forgery via improper trust chain validation

A flaw was found in Erlang OTP's publickey module. This vulnerability CWE-295, related to improper certificate validation, allows a non-Certificate Authority CA certificate to be accepted as an intermediate issuer. A remote attacker, holding an end-entity certificate issued by a trusted CA, can...

erlang: Erlang OTP public_key: Certificate validation bypass allows hostname spoofing

A flaw was found in Erlang OTP publickey. This improper certificate validation vulnerability allows a subordinate Certificate Authority CA with restricted DNS nameConstraints to bypass these restrictions. By issuing a leaf certificate that lacks a Subject Alternative Name SAN but contains a craft...

CVE-2026-18616

A vulnerability was identified in GL-iNet GL-MT3000 up to 4.4.5. The impacted element is the function server.setpeer of the file /cgi-bin/glc of the component wg-server.so Native Plugin. The manipulation of the argument publickey leads to command injection. Remote exploitation of the attack is...

CVE-2026-18616

GL-iNet GL-MT3000 devices (≤ v4.4.5) are affected by a command injection in the wg-server.so Native Plugin, specifically the server.set_peer function in /cgi-bin/glc. The vulnerability stems from improper handling of the public_key argument, enabling remote code execution. Exploitation is possibl...

CVE-2026-18616: Improper Neutralization of Special Elements used in a Command

A vulnerability was identified in GL-iNet GL-MT3000 up to 4.4.5. The impacted element is the function server.setpeer of the file /cgi-bin/glc of the component wg-server.so Native Plugin. The manipulation of the argument publickey leads to command injection. Remote exploitation of the attack is...

AZL-94202 CVE-2026-59251 affecting package erlang for versions less than 26.2.5.21-4

Allocation of resources without limits in Erlang/OTP publickey certificate path validation allows a remote unauthenticated attacker to cause denial of service by sending a crafted X.509 certificate chain during the TLS handshake. During RFC 5280 policy processing in publickey:pkixpathvalidation/3...

CVE-2026-59251

Allocation of resources without limits in Erlang/OTP publickey certificate path validation allows a remote unauthenticated attacker to cause denial of service by sending a crafted X.509 certificate chain during the TLS handshake. During RFC 5280 policy processing in publickey:pkixpathvalidation/3...

CVE-2026-59251

Allocation of resources without limits in Erlang/OTP publickey certificate path validation allows a remote unauthenticated attacker to cause denial of service by sending a crafted X.509 certificate chain during the TLS handshake. During RFC 5280 policy processing in publickey:pkixpathvalidation/3...

CVE-2026-59251

Summary: CVE-2026-59251 is a denial-of-service in Erlang/OTP public_key certificate path validation caused by unbounded growth of the certificate policy tree during RFC 5280 policy processing. The vulnerability occurs when validating TLS certificates; a chain with many policies per certificate ca...

CVE-2026-59251: Allocation of Resources Without Limits or Throttling

Allocation of resources without limits in Erlang/OTP publickey certificate path validation allows a remote unauthenticated attacker to cause denial of service by sending a crafted X.509 certificate chain during the TLS handshake. During RFC 5280 policy processing in publickey:pkixpathvalidation/3...

AZL-89175 CVE-2026-42790 affecting package erlang for versions less than 26.2.5.21-1

Improper Certificate Validation vulnerability in Erlang OTP publickey pubkeycert and publickey modules allows a DNS nameConstraints bypass via subject CommonName fallback in TLS hostname verification. Two flaws combine to allow a subordinate CA whose DNS nameConstraints are restricted e.g...

CVE-2026-42790

Improper Certificate Validation vulnerability in Erlang OTP publickey pubkeycert and publickey modules allows a DNS nameConstraints bypass via subject CommonName fallback in TLS hostname verification. Two flaws combine to allow a subordinate CA whose DNS nameConstraints are restricted e.g...

AZL-89172 CVE-2026-42789 affecting package erlang for versions less than 26.2.5.21-1

Improper Following of a Certificate's Chain of Trust vulnerability in Erlang OTP publickey pubkeycert module allows a non-CA certificate to be accepted as an intermediate issuer, enabling certificate chain forgery. In lib/publickey/src/pubkeycert.erl, pubkeycert:validateextensions/7 contains two...

CVE-2026-42791

Improper Certificate Validation vulnerability in Erlang OTP publickey pubkeyocsp module allows forged OCSP responses signed with an expired responder certificate to be accepted as valid. OCSP response verification in pubkeyocsp:verifyresponse/5 and pubkeyocsp:isauthorizedresponder/3 in...

EUVD-2026-32272

Improper Following of a Certificate's Chain of Trust vulnerability in Erlang OTP publickey pubkeycert module allows a non-CA certificate to be accepted as an intermediate issuer, enabling certificate chain forgery. In lib/publickey/src/pubkeycert.erl, pubkeycert:validateextensions/7 contains two...