GHSA-P597-CRQC-M349 Grav: The system, site, and theme Twig variables bypass the content sandbox entirely and are never covered by config_denied_paths

Summary Grav\Common\Twig\Twig::init unconditionally puts the raw system, site, and theme config arrays into $this-twigvars. Twig::processPage builds the variables for the sandboxed, editor-authored page-content render by copying that same base array $sandboxvars = $twigvars; and replacing only th...

EUVD-2026-65215

Grav: Non constant time nonce comparison in Utils::verifyNonce used for CSRF protection...

EUVD-2026-65216

Grav: Origin validation bypass in Uri::referrer and Pages::referrerRoute via unanchored prefix match...

Grav: Origin validation bypass in Uri::referrer() and Pages::referrerRoute() via unanchored prefix match

Summary Grav\Common\Uri::referrer and Grav\Common\Page\Pages::referrerRoute both check whether an incoming request's Referer header "came from our site" using strstartswith$referrer, $base, where $base is the site's own absolute root URL for example https://example.com, no trailing slash. Because...

GHSA-9CCQ-2JFG-QW33 Grav: Origin validation bypass in Uri::referrer() and Pages::referrerRoute() via unanchored prefix match

Summary Grav\Common\Uri::referrer and Grav\Common\Page\Pages::referrerRoute both check whether an incoming request's Referer header "came from our site" using strstartswith$referrer, $base, where $base is the site's own absolute root URL for example https://example.com, no trailing slash. Because...

EUVD-2026-58646

Grav: Stored XSS via quoted-attribute bypass in detectXss...

Grav: Path Traversal in ImageMedium::watermark() — arbitrary file disclosure via publicly-cached images

Reported by: Nihad Huseynli @nihaddhuseynli https://github.com/nihaddhuseynli — [email protected] ▎ Note: I attempted to report this via [email protected] first, per SECURITY.md, but the email bounced with 550 5.1.1 Address does not exist. Filing directly here instead. Path Traversal i...

EUVD-2026-52282

Grav: Path Traversal in ImageMedium::watermark — arbitrary file disclosure via publicly-cached images...

GHSA-W3F4-8PJ2-599W Grav: Path Traversal in ImageMedium::watermark() — arbitrary file disclosure via publicly-cached images

Reported by: Nihad Huseynli @nihaddhuseynli https://github.com/nihaddhuseynli — [email protected] ▎ Note: I attempted to report this via [email protected] first, per SECURITY.md, but the email bounced with 550 5.1.1 Address does not exist. Filing directly here instead. Path Traversal i...

EUVD-2026-52281

Grav: Incomplete callable validation in blueprint dynamic fields allows arbitrary static method invocation and file disclosure...

Grav: Incomplete callable validation in blueprint dynamic fields allows arbitrary static method invocation and file disclosure

Summary Grav CMS's blueprint dynamic-field callable guard can be bypassed with a fully-qualified Class::method string, letting an account with only page-editing rights admin.pages, not super-admin plant a directive in a page's form-field frontmatter that invokes an arbitrary public static PHP...

GHSA-7PGQ-CR25-XVC8 Grav: Incomplete callable validation in blueprint dynamic fields allows arbitrary static method invocation and file disclosure

Summary Grav CMS's blueprint dynamic-field callable guard can be bypassed with a fully-qualified Class::method string, letting an account with only page-editing rights admin.pages, not super-admin plant a directive in a page's form-field frontmatter that invokes an arbitrary public static PHP...

CVE-2026-76834

b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in paramcheckserializedarray fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST...

CVE-2026-92984

HUBzero CMS through 2.2.32 accepts session identifiers from query strings and request variables instead of cookies alone, allowing unauthenticated attackers to fixate victim sessions. Attackers can obtain a valid session identifier, send victims a crafted link containing it, and replay the...

CVE-2026-76834

b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901: the function param_check_serialized_array() fails to reject payloads using negative integer array keys . Unauthenticated attackers can submit crafted serialized PHP objects via POST to htsrv/call_plugin.php,...

CVE-2026-76834 b2evolution CMS 6.7.8 through 7.2.5 Object Injection via Negative Integer Array Key

b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in paramcheckserializedarray fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST...

CVE-2026-76834 b2evolution CMS 6.7.8 through 7.2.5 Object Injection via Negative Integer Array Key

b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in paramcheckserializedarray fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST...

CVE-2026-76834 b2evolution CMS 6.7.8 through 7.2.5 Object Injection via Negative Integer Array Key

b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in paramcheckserializedarray fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST...

EUVD-2026-44647

Grav: Decompression-bomb size cap bypassed by forged ZIP size in ZipArchiver/Installer...

CVE-2026-92984 HUBzero CMS through 2.2.32 Session Fixation via Query-String Session Identifier

HUBzero CMS through 2.2.32 accepts session identifiers from query strings and request variables instead of cookies alone, allowing unauthenticated attackers to fixate victim sessions. Attackers can obtain a valid session identifier, send victims a crafted link containing it, and replay the...