CVE-2026-2748

CVE-2026-2748 affects SEPPmail Secure Email Gateway prior to version 15.0.1. The issue is improper validation of S/MIME certificates issued for email addresses containing whitespace, which enables signature spoofing. Impact is limited to confidentiality/integrity as described, with no availabilit...

CVE-2026-2748

SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing...

CVE-2026-2748 S/MIME Certificate Subject Whitespace

SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing...

CVE-2026-2748 S/MIME Certificate Subject Whitespace

SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing...

CVE-2026-27445

SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing...

CVE-2026-27445

CVE-2026-27445 affects the SEPPmail Secure Email Gateway prior to version 15.0.1. The root cause is that the system does not reliably verify that a PGP signature was produced with the expected key, enabling signature spoofing in signatures accepted by the gateway. The CVSSv4.0 metrics specify a b...

CVE-2026-27445 PGP Signature Reflection

SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing...

CVE-2026-27445 PGP Signature Reflection

SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing...

CVE-2026-2746

SEPPmail Secure Email Gateway (pre-15.0.1) has a flaw in how it communicates PGP signature verification results, preventing detection of forged emails. Affected product: SEPPmail Secure Email Gateway prior to version 15.0.1. Root cause: incomplete/incorrect reporting of PGP verification outcomes....

CVE-2026-2746 Missing PGP Signature Tag

SEPPmail Secure Email Gateway before version 15.0.1 does not properly communicate PGP signature verification results, leaving users unable to detect forged emails...

SUSE CVE-2026-3338

Improper signature validation in PKCS7verify in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes. Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69...

SEPPmail Secure Email Gateway 安全漏洞

SEPPmail Secure Email Gateway is an email security gateway developed by the German company SEPPmail. Versions of SEPPmail Secure Email Gateway prior to version 15.0.1 contained security vulnerabilities. These vulnerabilities were due to improper validation of S/MIME certificates, which could lead...

PT-2026-22895

SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing...

PT-2026-23089

Name of the Vulnerable Software and Affected Versions Authlib versions 1.6.5 through 1.6.7 Description Authlib, a Python library for building OAuth and OpenID Connect servers, had a flaw in signature verification. Specifically, tests involving a malicious JWT with 'alg: none' and an empty signatu...

PT-2026-22891

SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing...

SEPPmail Secure Email Gateway 安全漏洞

SEPPmail Secure Email Gateway is an email security gateway developed by the German company SEPPmail. Versions of SEPPmail Secure Email Gateway prior to version 15.0.1 contained security vulnerabilities. These vulnerabilities stemmed from improper verification of whether the PGP signature was...

SEPPmail Secure Email Gateway 安全漏洞

SEPPmail Secure Email Gateway is an email security gateway developed by the German company SEPPmail. Versions of SEPPmail Secure Email Gateway prior to version 15.0.1 contained security vulnerabilities. These vulnerabilities stemmed from incorrect transmission of PGP signature verification result...

Linux Distros Unpatched Vulnerability : CVE-2026-3338

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Improper signature validation in PKCS7verify in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with...

GHSA-HFPC-8R3F-GW53 AWS-LC has PKCS7_verify Signature Validation Bypass

Summary AWS-LC is an open-source, general-purpose cryptographic library. Impact Improper signature validation in PKCS7verify in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes. Customers of AWS services do not need...

AWS-LC has PKCS7_verify Signature Validation Bypass

Summary AWS-LC is an open-source, general-purpose cryptographic library. Impact Improper signature validation in PKCS7verify in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes. Customers of AWS services do not need...