Signature validation bypass

More info at https://github.com/litesaml/lightsaml/security/advisories/GHSA-rm7m-7jq4-gw46...

CVE-2026-103902

A flaw was found in libdigidocpp. A remote attacker can create forged digital signatures that are improperly verified and incorrectly displayed as valid. This flaw allows an attacker to bypass signature validation checks and present fraudulent or altered documents as authentic...

PT-2026-85151

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wx95-c6cv-8532. This link is maintained to preserve external references. Original Description Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method,...

CVE-2026-79772: Unchecked Return Value

Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method, returning an empty string on failure instead of raising an exception. Attackers can exploit this to bypass signature validation in downstream SAML libraries by providing invalid...

CVE-2026-49283

The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.19.3, 4.20.2, 5.0.6, and 6.2.1, the HTTPArtifact::receive flow can treat an unsigned embedded SAML Response as cryptographically valid for the wrong identity provider. SOAPClient::addSSLValidator...

CVE-2026-64868

New API is a large language mode LLM gateway and artificial intelligence AI asset management system. Prior to 1.0.0-rc.11, POST /api/stripe/webhook, POST /api/creem/webhook, and POST /api/waffo/webhook read and log full request bodies before signature validation in router/api-router.go and the...

CVE-2026-47192

kas is a setup tool for bitbake based projects. Starting in version 4.8 and prior to version 5.3, kas checks out and processes repositories regarding configuration includes prior to validating signatures of those repositories. This may allow to replace on original repository with one under the...

CVE-2026-16443: Improper Verification of Cryptographic Signature

A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine for identity brokering in Red Hat Build of Keycloak. When importing identity provider metadata that lacks specific usage attributes for keys, the system incorrectly disables...

CVE-2026-47769

APIFold is the affected software. Prior to commit 7f19b52280f414f57af2b79a95333d1c8fbeece5, its OpenAPI/Swagger-based MCP server could accept arbitrary unauthenticated JSON on the /webhooks/:serverSlug/:eventName endpoint, storing payloads in Redis and webhook_events without signature checks or a...

CVE-2026-52686 Wildcard CNAME proof validation bypass

The issue is a DNSSEC validation bypass where wildcard expansion proofs NSEC/NSEC3 records are accepted without signature validation when the wildcard answer is a CNAME or DNAME record...

CVE-2026-52686 Wildcard CNAME proof validation bypass

The issue is a DNSSEC validation bypass where wildcard expansion proofs NSEC/NSEC3 records are accepted without signature validation when the wildcard answer is a CNAME or DNAME record...

CVE-2026-40941

A flaw was found in Cacti, an open-source performance and fault management framework. This vulnerability allows a remote attacker to bypass the package import signature validation. By exploiting this flaw, an attacker can import self-signed packages, potentially leading to the execution of...

DEBIAN-CVE-2026-40941

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31...

CVE-2026-40941

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31...

CVE-2026-40941 Cacti: Package Import Signature Validation Bypass Allows Self-Signed Packages

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31...

CVE-2026-40941

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31...

CVE-2026-40941: Improper Verification of Cryptographic Signature

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31...

Unsigned SAML LogoutRequest Acceptance in gosaml2

Summary The ValidateEncodedLogoutRequestPOST function in gosaml2 accepts completely unsigned SAML LogoutRequest messages even when SkipSignatureValidation is set to false. When validateElementSignature returns dsig.ErrMissingSignature, the code in decodelogoutrequest.go:60-62 silently falls throu...

PT-2026-81361

Name of the Vulnerable Software and Affected Versions Nokogiri versions prior to 1.19.1 Description The canonicalize method fails to check the return value from the xmlC14NExecute function. When a failure occurs, the method returns an empty string instead of raising an exception. This behavior...

CVE-2023-40090

In BTMBleVerifySignature of btmble.cc, there is a possible way to bypass signature validation due to side channel information disclosure. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...