CVE-2026-55890 Grav: Stored CSS injection via Markdown image ?style=… reaches MediaObjectTrait::style()

Grav is a file-based Web platform. Prior to 2.0.0-rc.9, Grav's incomplete fix for stored XSS through the Markdown media attribute action CVE-2026-42841 leaves the sibling MediaObjectTrait::style method reachable through the same Markdown excerpt-action pipeline, allowing an editor to save Markdow...

CVE-2026-55890

Grav CVE-2026-55890 concerns stored CSS injection via Markdown image style parameters that reach MediaObjectTrait::style(). The incomplete patch from GHSA-r7fx-8g49-7hhr fixed attribute() (denying dangerous attribute names) but leaves the sibling style() sink unmitigated, allowing editor-supplied...

CVE-2026-55890 Grav: Stored CSS injection via Markdown image ?style=… reaches MediaObjectTrait::style()

Grav is a file-based Web platform. Prior to 2.0.0-rc.9, Grav's incomplete fix for stored XSS through the Markdown media attribute action CVE-2026-42841 leaves the sibling MediaObjectTrait::style method reachable through the same Markdown excerpt-action pipeline, allowing an editor to save Markdow...

CVE-2026-55885 Grav: Admin Backup Zip File Exposes Account Credentials and Configuration Secrets

Grav is a file-based Web platform. Prior to 1.7.53, an authenticated administrator with backup permissions can download a ZIP archive containing the full Grav installation root, including user/accounts/admin.yaml with the administrator password hash and user/config with site configuration, throug...

CVE-2026-55885

CVE-2026-55885 (Grav) : An authenticated admin with backup permissions can download a ZIP of the Grav installation via the backup/download endpoint, exposing sensitive data: admin.yaml with the administrator password hash and site configuration under user/config. The vulnerability stems from (1) ...

CVE-2026-55885 Grav: Admin Backup Zip File Exposes Account Credentials and Configuration Secrets

Grav is a file-based Web platform. Prior to 1.7.53, an authenticated administrator with backup permissions can download a ZIP archive containing the full Grav installation root, including user/accounts/admin.yaml with the administrator password hash and user/config with site configuration, throug...

CVE-2026-55885

Grav is a file-based Web platform. Prior to 1.7.53, an authenticated administrator with backup permissions can download a ZIP archive containing the full Grav installation root, including user/accounts/admin.yaml with the administrator password hash and user/config with site configuration, throug...

CVE-2026-55885 Grav: Admin Backup Zip File Exposes Account Credentials and Configuration Secrets

Grav is a file-based Web platform. Prior to 1.7.53, an authenticated administrator with backup permissions can download a ZIP archive containing the full Grav installation root, including user/accounts/admin.yaml with the administrator password hash and user/config with site configuration, throug...

EUVD-2026-42944

Grav is a file-based Web platform. Prior to 1.7.53, an authenticated administrator with backup permissions can download a ZIP archive containing the full Grav installation root, including user/accounts/admin.yaml with the administrator password hash and user/config with site configuration, throug...

CVE-2026-53653

Grav (file-based web platform) contains CVE-2026-53653: unauthenticated denial of service by requesting image derivatives with oversized dimensions via URL actions like forceResize in Grav::fallbackUrl. The root cause is that request parameters are passed to ImageMedium magic actions without a di...

CVE-2026-53653 Grav: Unauthenticated denial of service via unbounded image derivative dimensions

Grav is a file-based Web platform. Prior to 1.7.53 and 2.0.0-rc.8, Grav allows an unauthenticated visitor to exhaust server memory and CPU by requesting image derivatives with oversized dimensions through URL query image actions such as forceResize in Grav::fallbackUrl, which passes request...

CVE-2026-53653 Grav: Unauthenticated denial of service via unbounded image derivative dimensions

Grav is a file-based Web platform. Prior to 1.7.53 and 2.0.0-rc.8, Grav allows an unauthenticated visitor to exhaust server memory and CPU by requesting image derivatives with oversized dimensions through URL query image actions such as forceResize in Grav::fallbackUrl, which passes request...

CVE-2026-53653 Grav: Unauthenticated denial of service via unbounded image derivative dimensions

Grav is a file-based Web platform. Prior to 1.7.53 and 2.0.0-rc.8, Grav allows an unauthenticated visitor to exhaust server memory and CPU by requesting image derivatives with oversized dimensions through URL query image actions such as forceResize in Grav::fallbackUrl, which passes request...

CVE-2026-61456

The Grav API plugin getgrav/grav-plugin-api before 1.0.3 fails to sanitize SVG files uploaded through the POST /api/v1/media endpoint. The HandlesMediaUploads::processUploadedFile method validates only the file extension and never invokes Security::sanitizeSVG, so an authenticated attacker with t...

CVE-2026-61450

Grav before 2.0.2 contains a Twig sandbox bypass that allows a page author any admin.pages user, or anyone able to write to user/pages to exfiltrate configuration secrets. Although the sandbox replaces the 'config' variable with a redacted facade and strips Config::get/toArray from the method...

CVE-2026-61455

Grav before 2.0.1 contains a decompression bomb vulnerability in ZipArchiver::extract that lacks limits on uncompressed size, file count, and nesting depth. Attackers can supply a crafted ZIP archive that expands to fill available disk space, causing denial of service by exhausting storage...

CVE-2026-61456 Grav before 1.0.3 Stored XSS via SVG Upload API

The Grav API plugin getgrav/grav-plugin-api before 1.0.3 fails to sanitize SVG files uploaded through the POST /api/v1/media endpoint. The HandlesMediaUploads::processUploadedFile method validates only the file extension and never invokes Security::sanitizeSVG, so an authenticated attacker with t...

CVE-2026-61456 Grav before 1.0.3 Stored XSS via SVG Upload API

The Grav API plugin getgrav/grav-plugin-api before 1.0.3 fails to sanitize SVG files uploaded through the POST /api/v1/media endpoint. The HandlesMediaUploads::processUploadedFile method validates only the file extension and never invokes Security::sanitizeSVG, so an authenticated attacker with t...

EUVD-2026-42905

The Grav API plugin getgrav/grav-plugin-api before 1.0.3 fails to sanitize SVG files uploaded through the POST /api/v1/media endpoint. The HandlesMediaUploads::processUploadedFile method validates only the file extension and never invokes Security::sanitizeSVG, so an authenticated attacker with t...

CVE-2026-61456

Grav API plugin (getgrav/grav-plugin-api) before 1.0.3 is vulnerable to stored XSS via SVG uploads. The HandlesMediaUploads::processUploadedFile() path only validates file extension and does not call Security::sanitizeSVG(), enabling an authenticated attacker with api.media.write to upload an SVG...