CVE-2026-85599

Grav Shortcode Core before 6.2.5 Stored XSS via unescaped parameters

Grav Shortcode Core before 6.2.5 contains stored cross-site scripting vulnerabilities in the [lorem] tag parameter and [details] summary parameter that are written to rendered pages without escaping. Attackers with page-edit access can inject arbitrary HTML and JavaScript that executes in the browsers of all page visitors, including administrators.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed

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CVE-2026-86193

Grav API Plugin Authentication Bypass via Group-Inherited Super

grav-plugin-api before 1.0.20 fails to validate group-inherited super permissions in user-management guards, allowing non-super user managers to modify super-admin accounts. Attackers with api.access and api.users.write can patch password fields on group-super accounts to gain full administrative control.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

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Getgrav

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Grav Grav-plugin-api

CVE-2026-85602

Grav Form Plugin before 9.1.20 reCAPTCHA v3 Authentication Bypass

The Grav Form plugin (getgrav/grav-plugin-form) versions 8.0.6 through 9.1.19 select the reCAPTCHA version to validate based solely on which response field key is present in the submitted payload. On a site configured for reCAPTCHA v3, an anonymous attacker can place their v3 token under the v2 field name (g-recaptcha-response instead of token), causing validation to use the v2 branch, which never applies the score threshold or verifies the expected action. This results in a complete bypass of reCAPTCHA v3 bot protection. The issue is fixed in version 9.1.20.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

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Grav

CVE-2026-85600

Grav Admin before 2.0.21 Stored XSS via username

Grav Admin (getgrav/grav-plugin-admin2) versions <= 2.0.19 contain a stored cross-site scripting vulnerability in the tHtml() function (src/lib/stores/i18n.svelte.ts), which substitutes untrusted parameters such as usernames into translation templates before parsing the result as markdown. Grav's server-side username validation (DataUser::isValidUsername) blocks filesystem-dangerous characters but not <, >, ", or ', allowing an attacker to register a username containing an HTML payload. When an administrator views a UI surface that renders the username through tHtml()—such as the two-factor force-disable confirmation prompt or the 'page is locked' editor notice—the payload executes in their authenticated session. Fixed in 2.0.21.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed

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Grav

CVE-2026-72828

Grav before 1.0.13 API Key Scope Bypass via InvitationsController

Grav Plugin API (getgrav/grav-plugin-api) before 1.0.13 fails to enforce API-key scope caps in InvitationsController. The strip-super and accept-groups decisions are gated on a bare isSuperAdmin() check rather than a scope-aware permission check, so a least-privilege API key (scoped to api.users.write) minted on a super account can create an invitation record containing super-admin access flags. When the invitation is accepted, those flags are written verbatim to the new account, resulting in privilege escalation to a fully controlled super account.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

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Grav

CVE-2026-72823

Grav before 1.0.13 API-key scope cap bypass via DemoController

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.13 contains an API-key scope cap bypass in DemoController. Its private requireSuper() method checks isSuperAdmin() and returns early before invoking requirePermission(), so the api_key_scopes cap (enforced only in requirePermission()) is skipped. As a result, any scoped API key minted on a super account can bypass its scope restrictions when calling the baseline() and reset() operations (e.g. POST /api/v1/demo/reset), allowing it to capture the demo baseline or force a demo reset. Impact is bounded to demo-engine control and is conditional on demo mode being configured with writable resources.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

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Grav

CVE-2026-80203

Grav before 1.0.18 Authentication Bypass via Scoped API Key

The getgrav/grav-plugin-api plugin before 1.0.18 does not enforce API-key scope in the requireNotSuperTarget() function in UsersController.php across seven sensitive user-management endpoints. The check uses isSuperAdmin() on the acting account rather than verifying whether the specific API key carries super authority (via isSuperWithinScope()). As a result, an API key scoped below full super authority but belonging to a super-admin account can act against other super-admin accounts—disabling their 2FA, deleting their avatar, minting new API keys under their identity, or deleting their existing API keys.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

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Grav

CVE-2026-65897

Grav API Plugin 1.0.9 Privilege Escalation via Invitations groups

Grav API Plugin versions before 1.0.10 fail to validate the groups field in InvitationsController::create(), allowing authenticated api.users.write callers to assign invited accounts to groups that grant api.super permissions. Attackers can create invitation records with elevated group membership, and when accepted, the new account gains full super-admin API access without the inviter holding those permissions.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

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Getgrav

Products

Grav

CVE-2026-65896

Grav API Plugin before 1.0.10 Path Traversal via move

Grav API Plugin (Composer package getgrav/grav-plugin-api) before 1.0.10 fails to properly validate the slug field in the POST /pages/{route}/move endpoint. PagesController::move() sanitizes the slug only with ltrim($body['slug'], '.'), which strips leading periods but does not neutralize '/' or '..' segments. An authenticated API caller with the api.pages.write permission can supply path traversal sequences (e.g., 01.home/../../../pwned) to move an entire page directory (content and media) to an arbitrary writable location outside user/pages/, including outside the Grav installation.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

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Products

Grav

CVE-2026-65895

Grav API Plugin before 1.0.10 Broken Access Control

Grav API Plugin versions before 1.0.10 fail to restrict write access to security-critical plugin configuration scopes, allowing authenticated users with api.config.write privilege to modify rate limiting and CORS settings. Attackers can disable rate limiting site-wide to enable credential brute-forcing attacks and reconfigure CORS policies to include attacker-controlled origins with credentials enabled.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed

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Getgrav

Products

Grav

CVE-2026-75574

Grav before 4.2.2 Remote Code Execution via Email Twig

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, publish the page, and submit the form to execute an arbitrary operating-system command as the account running PHP.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

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Grav

CVE-2026-76846

Grav before 2.0.16 Information Disclosure via Twig Sandbox

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 system.cache.redis.password when config_access is enabled.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

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Products

Grav

CVE-2026-72701

Grav CMS before 2.0.16 Timing Attack via verifyNonce

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 hash_equals() for CSRF nonce validation. Attackers can measure response timing differences to recover valid nonce values byte-by-byte through multiple requests, weakening CSRF protection below its intended security margin.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

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Grav

CVE-2026-72696

Grav CMS before 2.0.16 Symlink Following via createLockFile

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 predictable lock path pointing to any file the web server process can write to, and the next scheduled job run will follow the symlink and overwrite the target file's content with the job ID string.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

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Products

Grav

CVE-2026-56707

Grav Flex Objects 1.4.0 through 1.4.7 Authorization Bypass via Shortcode

Grav Flex Objects plugin versions 1.4.0 through 1.4.7 contain an authorization bypass vulnerability in the flex-objects shortcode that allows users with page-edit access to render any registered Flex collection without permission checks. Attackers can place the shortcode in published pages to expose sensitive directory contents including user account information, bypassing the authorize ACL enforced in the admin panel.

CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed

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Products

Grav

CVE-2026-72698

Grav CMS before 2.0.16 Information Disclosure via Twig Sandbox Bypass

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 using dot notation in Twig templates, bypassing the config_denied_paths restrictions.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

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Getgrav

Products

Grav

CVE-2026-56709

Grav before 3.9.2 Host Header Injection via sendInvitationEmail

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 require_trusted_host protection which only covers password reset flows.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

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Getgrav

Products

Grav

CVE-2026-80204

Grav before 1.0.18 Authentication Bypass via Scoped API Key

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.18 does not apply the API-key scope cap in the injectSecurityTab() function of BlueprintController when deciding whether a page's security/permissions blueprint section is editable. Because the function performs raw isSuperAdmin()/hasPermission() checks without a request parameter, it cannot enforce scopeAllows(). A caller holding a scoped API key may therefore see (and potentially edit) page permission fields beyond the scope granted to the key. The end-to-end write-time impact was not fully confirmed by the reporter.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

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Products

Grav

CVE-2026-72700

Grav before 3.9.1 Timing Attack via Non-Constant-Time Token Comparison

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 endpoint (taskReset) also lacks rate limiting, an attacker could in principle send repeated token guesses against a known username and use the timing differences to attempt to recover a valid token, though the vendor rates the practical exploitability as low and no end-to-end network exploit has been demonstrated.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

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Getgrav

Products

Grav

CVE-2026-72697

Grav CMS before 2.0.16 Path Traversal via media_directory

Grav CMS before 2.0.16 contains a path traversal vulnerability in the media_directory() 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 paths to media_directory() and use the allow-listed filepath accessor on Medium objects to read file contents of any file matching configured media extensions that the web server process can access.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

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Getgrav

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Grav