CVE-2026-104454

YesWiki before 4.6.7 contains an algorithmic-complexity denial of service in the wakka.php formatter due to an On^2 markdown-link regex. Unauthenticated attackers can submit a small crafted body of bracket characters to the page-edit preview endpoint to pin PHP-FPM workers and saturate the pool...

CVE-2026-104454 YesWiki before 4.6.7 ReDoS via wakka.php Edit-Preview Endpoint

YesWiki before 4.6.7 contains an algorithmic-complexity denial of service in the wakka.php formatter due to an On^2 markdown-link regex. Unauthenticated attackers can submit a small crafted body of bracket characters to the page-edit preview endpoint to pin PHP-FPM workers and saturate the pool...

EUVD-2026-91465

YesWiki before 4.6.7 contains an algorithmic-complexity denial of service in the wakka.php formatter due to an On^2 markdown-link regex. Unauthenticated attackers can submit a small crafted body of bracket characters to the page-edit preview endpoint to pin PHP-FPM workers and saturate the pool...

CVE-2026-104454

YesWiki versions before 4.6.7 are vulnerable to an algorithmic-complexity denial of service within the wakka.php formatter. The root cause is an O(n^2) markdown-link regular expression that allows unauthenticated attackers to submit a small, specially crafted body of bracket characters to the pag...

PT-2026-104264

YesWiki before 4.6.7 contains an algorithmic-complexity denial of service in the wakka.php formatter due to an On^2 markdown-link regex. Unauthenticated attackers can submit a small crafted body of bracket characters to the page-edit preview endpoint to pin PHP-FPM workers and saturate the pool...

CVE-2026-104454: Inefficient Regular Expression Complexity

YesWiki before 4.6.7 contains an algorithmic-complexity denial of service in the wakka.php formatter due to an On^2 markdown-link regex. Unauthenticated attackers can submit a small crafted body of bracket characters to the page-edit preview endpoint to pin PHP-FPM workers and saturate the pool...

CVE-2026-103275 Ghost 5.42.2 before 6.58.0 Password Hash Disclosure

Ghost 5.42.2 before 6.58.0 contains an information disclosure vulnerability in the Admin API bulk post and page edit and delete endpoints, which accept filters on restricted fields such as authors.password, because of an incomplete fix for CVE-2026-70590. Staff-level attackers can infer other sta...

Cross-site Scripting (XSS)

Grav is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to improper handling of invalid UTF-8 bytes in the XSS detection function, which allows an authenticated attacker with page-edit permissions to bypass the XSS safety check, store malicious JavaScript, and execute it in a...

EUVD-2026-60591

Grav: Blueprint dynamic-data bare-function branch is denylist-gated and omits errorlog, giving arbitrary file write...

Grav: config_denied_paths default list omits `system`, exposing real secrets (e.g. system.cache.redis.password) via the Twig sandbox when config_access is enabled

Summary system/config/security.yaml's default twigsandbox.configdeniedpaths list plugins, streams, security, backups, scheduler omits the system prefix. When an operator enables the documented, non-default twigcontent.configaccess: true setting intended to safely expose low-sensitivity values lik...

EUVD-2026-65220

Grav: configdeniedpaths default list omits system, exposing real secrets e.g. system.cache.redis.password via the Twig sandbox when configaccess is enabled...

CVE-2026-85599

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 browser...

CVE-2026-85599

Grav Shortcode Core before version 6.2.5 is vulnerable to stored XSS in two shortcode parameters: the [lorem] tag parameter and the [details] summary parameter. These values are written to rendered pages without escaping, allowing an attacker with page-edit access to inject arbitrary HTML and Jav...

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 browser...

EUVD-2026-71022

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 browser...

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 browser...

PT-2026-85499

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 browser...

Insufficiently Protected Credentials

Overview getgrav/grav is a Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS. Affected versions of this package are vulnerable to Insufficiently Protected Credentials via the Twig sandbox configuration, which contains an incomplete default denylist. An attacker can access...

GHSA-CRRC-VPP2-F5X7 Duplicate Advisory: Grav: config_denied_paths default list omits `system`, exposing real secrets (e.g. system.cache.redis.password) via the Twig sandbox when config_access is enabled

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-xjw5-q542-3vmr. This link is maintained to preserve external references. Original Description Grav before 2.0.16 contains an incomplete default denylist in the Twig sandbox configuration that fails to block acce...

Duplicate Advisory: Grav: config_denied_paths default list omits `system`, exposing real secrets (e.g. system.cache.redis.password) via the Twig sandbox when config_access is enabled

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-xjw5-q542-3vmr. This link is maintained to preserve external references. Original Description Grav before 2.0.16 contains an incomplete default denylist in the Twig sandbox configuration that fails to block acce...