CVE-2026-72701: Observable Timing Discrepancy

Grav CMS before 2.0.16 contains a timing vulnerability in Utils::verifyNonce that uses non-constant-time string comparison with the === operator instead of hashequals for CSRF nonce validation. Attackers can measure response timing differences to recover valid nonce values byte-by-byte through...

CVE-2026-76846: Insufficiently Protected Credentials

Grav before 2.0.16 contains an incomplete default denylist in the Twig sandbox configuration that fails to block access to system configuration secrets. Attackers with page-edit permission can use config.get or config.toArray in Twig templates to retrieve sensitive values like...

CVE-2026-75574: Improper Neutralization of Special Elements Used in a Template Engine

The Grav Email plugin getgrav/grav-plugin-email before 4.2.2 renders page-editor-controlled Email action parameters as unsandboxed Twig templates. An authenticated remote user with only api.access and api.pages.write permissions can place a Twig expression in header.form.process.email.body, publi...

CVE-2026-72700: Observable Timing Discrepancy

The getgrav/grav-plugin-login Composer plugin before 3.9.1 used by Grav compares password reset and account activation tokens using a non-constant-time === string comparison instead of hashequals in classes/Controller.php taskReset and login.php activation handler. Because the token-submission...

CVE-2026-56709: Reliance on Reverse DNS Resolution for a Security-Critical Action

Grav before 3.9.2 fails to validate untrusted Host headers in the sendInvitationEmail function when constructing token-bearing invitation links. Attackers can manipulate the Host header to poison invitation links and redirect users to attacker-controlled domains, bypassing the requiretrustedhost...

CVE-2026-72696: Improper Link Resolution Before File Access

Grav CMS before 2.0.16 contains a symlink following vulnerability in Scheduler Job::createLockFile that allows local attackers to overwrite arbitrary files by pre-creating symlinks at predictable lock file paths in the world-writable temp directory. Attackers can place a symlink at the predictabl...

PT-2026-81143

The getgrav/grav-plugin-login Composer plugin before 3.9.1 used by Grav compares password reset and account activation tokens using a non-constant-time === string comparison instead of hash equals in classes/Controller.php taskReset and login.php activation handler. Because the token-submission...

PT-2026-81138

Grav before 2.0.16 contains a path traversal vulnerability in MediaUploadTrait::deleteFile that allows authenticated users with media management permissions to delete arbitrary files by supplying filenames with directory traversal sequences. The method validates only the basename portion of the...

CVE-2026-56708: Time-of-check Time-of-use (TOCTOU) Race Condition

Grav API plugin before 1.0.16 contains a server-side request forgery vulnerability in webhook delivery that allows attackers to bypass hostname validation by DNS rebinding. Attackers controlling authoritative DNS for a configured webhook hostname can answer validation lookups with public addresse...

CVE-2026-56710: Incorrect Authorization

Grav Login plugin versions before 1.0.16 fail to validate the target account's privilege level in the onApiUserListRowAction unlock handler. An attacker with api.users.write permission can clear login lockout counters on admin.super accounts, removing brute-force protection from the...

CVE-2026-72695: Improper Limitation of a Pathname to a Restricted Directory

Grav before 2.0.16 contains a path traversal vulnerability in MediaUploadTrait::deleteFile that allows authenticated users with media management permissions to delete arbitrary files by supplying filenames with directory traversal sequences. The method validates only the basename portion of the...

CVE-2026-72697: Improper Limitation of a Pathname to a Restricted Directory

Grav CMS before 2.0.16 contains a path traversal vulnerability in the mediadirectory Twig function that fails to validate filesystem paths, allowing authenticated users to enumerate and access files outside intended scope. Attackers with page authoring privileges can supply arbitrary filesystem...

CVE-2026-72699: Observable Discrepancy

The Grav Login plugin getgrav/grav-plugin-login before 3.9.1 is vulnerable to email address enumeration. The register method in classes/Login.php throws a distinct exception EMAILNOTAVAILABLE when a submitted email address already belongs to an existing account, while allowing registration to...

CVE-2026-76839: Insufficiently Protected Credentials

Grav before 2.0.16 allows sandboxed Twig templates to access sensitive User fields through allow-listed offsetGet and offsetexists methods that lack field filtering. Attackers with page-edit permissions can call offsetGet on User objects to extract hashed passwords and 2FA secrets, enabling offli...

PT-2026-81135

Grav API plugin before 1.0.16 contains a server-side request forgery vulnerability in webhook delivery that allows attackers to bypass hostname validation by DNS rebinding. Attackers controlling authoritative DNS for a configured webhook hostname can answer validation lookups with public addresse...

PT-2026-81137

Grav Login plugin versions before 1.0.16 fail to validate the target account's privilege level in the onApiUserListRowAction unlock handler. An attacker with api.users.write permission can clear login lockout counters on admin.super accounts, removing brute-force protection from the...

PT-2026-81139

Grav CMS before 2.0.16 contains a symlink following vulnerability in Scheduler Job::createLockFile that allows local attackers to overwrite arbitrary files by pre-creating symlinks at predictable lock file paths in the world-writable temp directory. Attackers can place a symlink at the predictabl...

PT-2026-81145

Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer and Pages::referrerRoute methods, which validate the Referer header using an unanchored string prefix match str starts with$referrer, $base with no trailing delimiter. An attacker who controls a domain that begins wi...

PT-2026-81146

The Grav Email plugin getgrav/grav-plugin-email before 4.2.2 renders page-editor-controlled Email action parameters as unsandboxed Twig templates. An authenticated remote user with only api.access and api.pages.write permissions can place a Twig expression in header.form.process.email.body, publi...

CVE-2026-72698: Exposure of Sensitive Information to an Unauthorized Actor

Grav CMS before 2.0.16 fails to filter system, site, and theme configuration arrays in sandboxed Twig renders, allowing content editors to read sensitive configuration values. Attackers with page-content edit access can access raw configuration arrays including secrets like cache credentials by...