CVE-2026-58054

CVE-2026-58054 is not a public vulnerability in practice; however, connected details describe a concrete issue in MyBB 1.8.40 where a limited ACP user can assign the Administrators (gid 4) group because verify_usergroup() unconditionally returns true for that group. This enables privilege escalat...

EUVD-2026-39974

MyBB 1.8.40 does not restrict which usergroup a limited Admin Control Panel user may assign when creating or editing users; the user module offers the Administrators group gid 4 and its datahandler's verifyusergroup unconditionally returns true. An admin holding only the delegated user-management...

PT-2026-53086

Name of the Vulnerable Software and Affected Versions MyBB version 1.8.40 Description An issue exists where users with limited Admin Control Panel ACP access can assign any usergroup to an account during creation or editing. This occurs because the verify usergroup function in the user module...

Linux Distros Unpatched Vulnerability : CVE-2026-53131

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: require Ethernet MAC header before using ethhdr ip6teui64, xtmac, the bitmap:ip,mac, hash:ip,mac, and hash:mac ipset types, and nflogsyslog access...

GHSA-8JGF-23Q5-X7XX ex_aws_sns: Trusted-attacker `SigningCertURL` permits complete SNS signature bypass

Summary ExAws.SNS.verifymessage/1 fetches the signing certificate from the SigningCertURL field of the incoming SNS message without validating that the URL uses HTTPS or that its host is an AWS-owned SNS certificate domain. An unauthenticated attacker who can POST to any endpoint that calls...

EUVD-2026-39575

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...

Oracle Linux 8 : openssl (ELSA-2026-50323)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-50323 advisory. - Fix CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify Resolves: RHEL-180978 - Fix CVE-2024-4741: Use After Free with SSLfreebuffers Resolve...

SUSE SLES15 Security Update : openssl-3 (SUSE-SU-2026:2598-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2598-1 advisory. This update for openssl-3 fixes the following issues - CVE-2026-7383: Possible Heap Buffer Overflow in ASN.1 Multibyte String...

SUSE SLES15 Security Update : openssl-1_1-livepatches (SUSE-SU-2026:2621-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2026:2621-1 advisory. This update for openssl-11-livepatches fixes the following issues - CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify bsc1266357. Tenable has...

CVE-2026-6331

HMAC zero-length tag forgery in EVPDigestVerifyFinal, where a zero-length tag could be accepted as valid during HMAC verification. In the OpenSSL-compatibility HMAC verify path the supplied signature length was only checked as not exceeding the MAC length, so a zero-length or otherwise truncated...

DEBIAN-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...

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...

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...

CVE-2026-6331

HMAC zero-length tag forgery in EVPDigestVerifyFinal, where a zero-length tag could be accepted as valid during HMAC verification. In the OpenSSL-compatibility HMAC verify path the supplied signature length was only checked as not exceeding the MAC length, so a zero-length or otherwise truncated...

CVE-2026-7511

PKCS7verify signer confusion allows forged signatures, where the signer associated with a signature is not correctly bound, permitting a forged signature to be accepted...

CVE-2026-7511 PKCS7_verify signer confusion allows forged signatures to be accepted

PKCS7verify signer confusion allows forged signatures, where the signer associated with a signature is not correctly bound, permitting a forged signature to be accepted...

CVE-2026-55962 TLS 1.3 post-handshake authentication: server accepts Finished without client Certificate/CertificateVerify

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...

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...

CVE-2026-55962

CVE-2026-55962 (WolfSSL) : TLS 1.3 post-handshake authentication could allow a server to accept a client’s Finished message without a Certificate and CertificateVerify if a post-handshake CertificateRequest was outstanding. The fix scopes the check to the initial handshake: after certReqCtx is se...

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...