CVE-2026-15981

CVE-2026-15981 SAML Single Sign On = 5.4.4 - Unauthenticated Authentication Bypass via SAMLResponse Parameter CVE-2026-15981 SAML Single Sign On ≤ 5.4.4 — Unauthenticated Authentication Bypass Proof-of-Concept Exploit Malformed Signature → opensslverify returns -1 → PHP loose cast to true →...

CVE-2026-52767

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: 1, 0, -1, and...

CVE-2026-52767: Improper Verification of Cryptographic Signature

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: 1, 0, -1, and...

CVE-2026-52767 YesWiki: Unauthenticated ActivityPub Signature-Verification Bypass via `!openssl_verify(...)` accepting `int(-1)`

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: 1, 0, -1, and...

EUVD-2026-71800

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: 1, 0, -1, and...

CVE-2026-52767 YesWiki: Unauthenticated ActivityPub Signature-Verification Bypass via `!openssl_verify(...)` accepting `int(-1)`

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: 1, 0, -1, and...

CVE-2026-52767 YesWiki: Unauthenticated ActivityPub Signature-Verification Bypass via `!openssl_verify(...)` accepting `int(-1)`

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: 1, 0, -1, and...

CVE-2026-52767

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: 1, 0, -1, and...

CVE-2026-52767

YesWiki versions 4.6.2 through 4.6.5 are affected by a signature-verification bypass in the ActivityPub implementation. The vulnerable function HttpSignatureService::verifySignature() in tools/bazar/services/HttpSignatureService.php uses a loose boolean negation on PHP's openssl_verify(). When op...

CVE-2026-77998

Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO 11.0.2, SAML SP Single Sign On – Login with ADFS 6.4, SAML SP Single Sign On – SAML SSO login with Google Apps 6.4 - This is due to the mosamlvalidatesignature function...

EUVD-2026-65476

Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO 11.0.2, SAML SP Single Sign On – Login with ADFS 6.4, SAML SP Single Sign On – SAML SSO login with Google Apps 6.4 - This is due to the mosamlvalidatesignature function...

CVE-2026-77998 Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO < 11.0.2, SAML SP Single Sign On – Login with ADFS < 6.4, SAML SP Single Sign On – SAML SSO login with Google Apps < 6.4

Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO 11.0.2, SAML SP Single Sign On – Login with ADFS 6.4, SAML SP Single Sign On – SAML SSO login with Google Apps 6.4 - This is due to the mosamlvalidatesignature function...

CVE-2026-77998

This CVSS 10.0 (Critical) vulnerability affects three miniOrange Joomla SAML SSO extensions: miniOrange SAML SSO (&lt; 11.0.2), SAML SP Single Sign On – Login with ADFS (&lt; 6.4), and SAML SP Single Sign On – SAML SSO login with Google Apps (

CVE-2026-77998 Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO < 11.0.2, SAML SP Single Sign On – Login with ADFS < 6.4, SAML SP Single Sign On – SAML SSO login with Google Apps < 6.4

Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO 11.0.2, SAML SP Single Sign On – Login with ADFS 6.4, SAML SP Single Sign On – SAML SSO login with Google Apps 6.4 - This is due to the mosamlvalidatesignature function...

CVE-2026-77998: Authorization Bypass Through User-Controlled Key

Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO 11.0.2, SAML SP Single Sign On – Login with ADFS 6.4, SAML SP Single Sign On – SAML SSO login with Google Apps 6.4 - This is due to the mosamlvalidatesignature function...

VulnCheck KEV: CVE-2026-15981

The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.4.4. This is due to the mosamlvalidatesignature function performing a loose boolean check on the raw tri-state integer returned by PHP's opensslverify, causing a...

CVE-2026-15981: Improper Authentication

The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.4.4. This is due to the mosamlvalidatesignature function performing a loose boolean check on the raw tri-state integer returned by PHP's opensslverify, causing a...

CVE-2026-25892

Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from a...

CVE-2026-25892

Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from a...

CVE-2026-25892: Improper Input Validation

Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from a...