CVE-2026-52763: Improper Neutralization of Special Elements used in an SQL Command

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, the recentchanges action actions/recentchanges.php accepts a period argument from two disjoint parameter spaces. A whitelist validates only the URL form against 'day','week','month'. The action-argument form takes the else branch wi...

CVE-2026-52772: Improper Neutralization of Input During Web Page Generation

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, Bazar form-field templates still apply |raw'html' to field.label / field.hint in attribute and label-body contexts, resulting stored XSS in form renders. This issue has been patched in version 4.6.6...

PT-2026-86312

Name of the Vulnerable Software and Affected Versions Hummingbird versions prior to 3.21.1 Description Remote Code Execution is possible via the log msg function in core/modules/class-page-cache.php. The page-cache debug log is written to a web-accessible PHP file that fails to maintain a...

CVE-2026-52762: Improper Neutralization of Special Elements Used in a Template Engine

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki Bazar contains a stored Server-Side Template Injection SSTI vulnerability in the semantic template feature that can be escalated to confirmed Remote Code Execution RCE. An authenticated administrator can place arbitrary Twig...

PT-2026-86327

Name of the Vulnerable Software and Affected Versions Welcart e-Commerce plugin for WordPress versions prior to 2.12.2 Description PHP Object Injection occurs due to the deserialization of untrusted input within the Telecom EDY payment callback usces action acting transaction. Unauthenticated...

CVE-2026-52777 YesWiki: Authenticated PHP Object Injection in BazarImportAction via unserialize

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, there is an authenticated PHP object injection vulnerability in BazarImportAction via unserialize. This issue has been patched in version 4.6.6...

CVE-2026-52777

CVE-2026-52777 affects YesWiki (a PHP wiki system) prior to version 4.6.6 . The vulnerability is an authenticated PHP object injection in BazarImportAction via an unrestricted unserialize() call in tools/bazar/services/CSVManager.php::importEntry(), which lacks the ['allowed_classes' => false]...

CVE-2026-52777 YesWiki: Authenticated PHP Object Injection in BazarImportAction via unserialize

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, there is an authenticated PHP object injection vulnerability in BazarImportAction via unserialize. This issue has been patched in version 4.6.6...

EUVD-2026-71808

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, there is an authenticated PHP object injection vulnerability in BazarImportAction via unserialize. This issue has been patched in version 4.6.6...

EUVD-2026-71807

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki through the latest development branch contains a SQL injection vulnerability in ReactionManager::deleteUserReaction that allows any authenticated user to inject arbitrary SQL via the idreaction and id URL path parameters. Th...

CVE-2026-52775 YesWiki Authenticated SQL Injection in ReactionManager

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki through the latest development branch contains a SQL injection vulnerability in ReactionManager::deleteUserReaction that allows any authenticated user to inject arbitrary SQL via the idreaction and id URL path parameters. Th...

EUVD-2026-71804

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, Bazar form-field templates still apply |raw'html' to field.label / field.hint in attribute and label-body contexts, resulting stored XSS in form renders. This issue has been patched in version 4.6.6...

CVE-2026-52771 YesWiki: Second-Order SQL Injection in Page Delete API via Unescaped Page Tag (`ApiController::deletePage`)

YesWiki is a wiki system written in PHP. From version 4.2.0 to before version 4.6.6, ApiController::deletePage interpolates a page tag retrieved from the database into a DELETE FROM …links WHERE totag = '$tag' query without escaping. The page tag is attacker-controlled — the POST /api/pages/tag A...

CVE-2026-52770 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in yeswiki/yeswiki

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki’s public Bazar entry-listing APIs are vulnerable to unauthenticated SQL injection in numeric query / queries filters. For Bazar fields whose value structure is numeric, YesWiki escapes the attacker-controlled filter value bu...

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 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...

EUVD-2026-71799

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, the erasespamedcomments wiki action actions/EraseSpamedCommentsAction.php accepts a suppr array from POST and deletes every wiki page whose tag appears in that array, with no authorization check anywhere in the action body or in the...

CVE-2026-46636

Twig is a template language for PHP. From version 1.0.0 to before version 3.27.0, SecurityPolicy::checkMethodAllowed unconditionally whitelists all method calls on instances of Twig\Markup. Twig\Markup is not final, so subclasses inherit the bypass. An application that passes an object of a...

CVE-2026-46636 Twig: Sandbox method allowlist bypass via `Markup` subclass

Twig is a template language for PHP. From version 1.0.0 to before version 3.27.0, SecurityPolicy::checkMethodAllowed unconditionally whitelists all method calls on instances of Twig\Markup. Twig\Markup is not final, so subclasses inherit the bypass. An application that passes an object of a...