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Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab

  • Veröffentlicht: 02.12.2025
  • Aktualisiert: 11.10.2026 10:22

Summary

A Reflected Cross-Site Scripting (XSS) vulnerability was identified in the /admin/pages/[page] endpoint of the Grav application. This vulnerability allows attackers to inject malicious scripts into the data[header][content][items] parameter.

Details

Vulnerable Endpoint: GET /admin/pages/[page]
Parameter: data[header][content][items]

The application fails to properly validate and sanitize user input in the data[header][content][items] parameter. As a result, attackers can craft a malicious URL with an XSS payload. When this URL is accessed, the injected script is reflected back in the HTTP response and executed within the context of the victim's browser session.

PoC

Payload:

"><ImG sRc=x OnErRoR=alert('XSS-PoC3')>

  1. Log in to the Grav Admin Panel and navigate to Pages.

  2. Create a new page or edit an existing one.

  3. In the Advanced > Blog Config > Items field (which maps to data[header][content][items]), insert the payload above.

image

  1. Save the page.

  2. The malicious payload is reflected and rendered by the application without proper sanitization. The JavaScript code is immediately executed in the browser.

image

Impact

Reflected cross-site scripting (XSS) attacks can have serious consequences, including:

  • User actions: Attackers can perform actions on behalf of the user

  • Data theft: Sensitive information such as session cookies can be stolen

  • Account compromise: Attackers may impersonate legitimate users

  • Malicious code execution: Arbitrary JavaScript code can run in the user’s browser

  • Website defacement or misinformation: Malicious output may be injected visually

  • User redirection: Victims may be redirected to phishing or malicious websites

by CVE-Hunters

Betroffene Software

Klicken Sie auf eine Technologie, um alle zugehörigen Schwachstellen anzuzeigen.

PlattformPaketAnfällige VersionenBehoben in
Composer-Paket getgrav/grav < 1.8.0-beta.27 1.8.0-beta.27

Verweise

CVSS-Wert -
CVSS-Vektor
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H
Schwäche (CWE)
CWE-79
Plattform
Composer
Paket
getgrav/grav
Veröffentlicht
02.12.2025
Aktualisiert
11.10.2026 10:22

Quellen und Lizenzen

OSV / GitHub Advisory Database - GHSA-65mj-f7p4-wggq - CC BY 4.0

Schwachstellenhistorie: getgrav/grav

Alle veröffentlichten Schwachstellen dieses Pakets (Composer-Paket), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.

Alle (99) im Archiv
Einträge insgesamt
99
Erste → letzte
11.2019 09.2026
Ohne Fix
6
In Angriffen ausgenutzt
0

Verteilung nach Schweregrad

  • Kritisch 7
  • Hoch 47
  • Mittel 41
  • Niedrig 4

Veröffentlichungen pro Jahr

Schweregrad:
  1. Grav CMS vulnerable to remote code execution via .zip file upload
    Hoch · 8.8 CVE-2026-72819 < 2.0.13 2.0.13
  2. Grav: Missing admin.super guard on core group blueprint access field allows admin.users operator to escalate to super-admin
    Hoch · 9.1 CVE-2026-75837 < 2.0.14 2.0.14
  3. Grav: Blueprint dynamic-data bare-function branch is denylist-gated and omits error_log, giving arbitrary file write
    Kritisch · 8.8 CVE-2026-75827 < 2.0.15 2.0.15
  4. Grav: detectXss() misses an event-handler attribute after an unpaired quote in an unquoted attribute value, giving stored XSS
    Kritisch · 8.7 CVE-2026-75828 < 2.0.15 2.0.15
  5. Grav: Unauthenticated Path Traversal via Missing Directory-Boundary Check in `plugin-asset-map.php` Static Asset Server (`index.php`)
    Hoch · 5.9 CVE-2026-74907 < 2.0.15 2.0.15
  6. Grav: Path Traversal in MediaUploadTrait::deleteFile() Allows Arbitrary File Deletion
    Hoch · 8.1 CVE-2026-72695 < 2.0.16 2.0.16
  7. Grav: media_directory() Twig function allows filesystem path traversal and file content disclosure from sandboxed page content
    Hoch · 6.5 CVE-2026-72697 < 2.0.16 2.0.16
  8. Grav: UserInterface offsetget/offsetexists allow-listed in Twig sandbox let editor-authored content leak hashed_password and 2FA secrets via offsetGet()
    Hoch · 7.7 CVE-2026-76839 < 2.0.16 2.0.16
  9. 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
    Hoch · 7.5 CVE-2026-76846 < 2.0.16 2.0.16
  10. Grav: The system, site, and theme Twig variables bypass the content sandbox entirely and are never covered by config_denied_paths
    Hoch · 6.5 CVE-2026-72698 < 2.0.16 2.0.16
  11. Grav: Path Traversal in ImageMedium::watermark() — arbitrary file disclosure via publicly-cached images
    Hoch CVE-2026-69089 >= 2.0.10, < 2.0.11 2.0.11
  12. Grav: Incomplete callable validation in blueprint dynamic fields allows arbitrary static method invocation and file disclosure
    Hoch · 8.1 CVE-2026-69088 >= 2.0.7, < 2.0.11 2.0.11
  13. Grav: FlexDirectory::dynamicDataField() executes arbitrary callables from blueprint data with no validation
    Hoch · 8.8 CVE-2026-65608 >= 1.7.0, < 2.0.9 2.0.9
  14. Grav: 2FA Bypass via 'login.regenerate2FASecret' - Secret Rotation During Pending Challenge
    Hoch · 7.4 CVE-2026-62232 < 2.0.4 2.0.4
  15. Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()
    Hoch CVE-2026-64850 < 2.0.7 2.0.7
  16. Grav: .htaccess file extension rules bypass via case variation on case-insensitive filesystems
    Hoch CVE-2026-62230 < 2.0.4 2.0.4
  17. Grav: Unauthenticated denial of service via unbounded image derivative dimensions
    Hoch CVE-2026-53653 >= 2.0.0-beta.1, < 2.0.0-rc.8, < 1.7.53 2.0.0-rc.8, 1.7.53
  18. Grav: Twig sandbox allows editor-role users to exfiltrate all plugin secrets via Config::toArray()
    Hoch · 7.7 CVE-2026-44738 < 2.0.0-rc.2 2.0.0-rc.2
  19. Low-privileged Grav API users can create super-admin accounts via blueprint-upload
    Hoch CVE-2026-42844 < 2.0.0-beta.4 2.0.0-beta.4
  20. Grav is Vulnerable to Stored XSS via Tag Injection
    Hoch · 8.9 CVE-2026-42611 < 2.0.0-beta.2 2.0.0-beta.2
  21. Grav has Unauthenticated Path Traversal & Arbitrary File Write in its FormFlash component
    Hoch CVE-2026-42608 < 2.0.0-beta.2 2.0.0-beta.2
  22. Grav Vulnerable to Administrative Account Disruption and Privilege De-escalation via User Overwrite Logic
    Hoch · 8.1 CVE-2026-42609 < 2.0.0-beta.2 2.0.0-beta.2
  23. Grav has multiple RCE vectors: unsafe unserialize (x3), command injection in git clone, SSTI blocklist bypass
    Kritisch CVE-2026-56700 < 2.0.0-beta.2 2.0.0-beta.2
  24. Grav Vulnerable to Publisher-Level Stored XSS via Unquoted Event Attributes
    Hoch · 8.5 CVE-2026-42612 < 2.0.0-beta.2 2.0.0-beta.2
  25. Grav Vulnerable to Privilege Escalation via Missing Server-Side Validation of groups/access
    Kritisch · 9.4 CVE-2026-42613 < 2.0.0-beta.2 2.0.0-beta.2
  26. Grav Vulnerable to Remote Code Execution (RCE) via Malicious Plugin ZIP Upload in Direct Install Feature
    Kritisch · 9.1 CVE-2026-42607 < 2.0.0-beta.2 2.0.0-beta.2
  27. Grav may be vulnerable to SSRF attack via Twig Templates
    Kritisch · 9.1 CVE-2025-66844 <= 1.7.49.5 keine Korrektur
  28. Grav is vulnerable to Server-Side Template Injection (SSTI) via Forms
    Hoch CVE-2025-66298 < 1.8.0-beta.27 1.8.0-beta.27
  29. Grav is vulnerable to RCE via SSTI through Twig Sandbox Bypass
    Hoch CVE-2025-66294 < 1.8.0-beta.27 1.8.0-beta.27
  30. Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab dieser Eintrag
    Mittel CVE-2025-66309 < 1.8.0-beta.27 1.8.0-beta.27
  31. Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection
    Hoch CVE-2025-66297 < 1.8.0-beta.27 1.8.0-beta.27
  32. Grav vulnerable to Path traversal / arbitrary YAML write via user creation leading to Account Takeover / System Corruption
    Hoch · 8.8 CVE-2025-66295 < 1.8.0-beta.27 1.8.0-beta.27
  33. Grav vulnerable to Denial of Service via Improper Input Handling in 'Supported' Parameter
    Hoch CVE-2025-66305 < 1.8.0-beta.27 1.8.0-beta.27
  34. Grav has Broken Access Control which allows an Editor to modify the page's YAML Frontmatter to alter form processing actions
    Hoch CVE-2025-66301 < 1.8.0-beta.27 1.8.0-beta.27
  35. Grav is vulnerable to Arbitrary File Read
    Hoch · 8.5 CVE-2025-66300 < 1.8.0-beta.27 1.8.0-beta.27
  36. Grav is Vulnerable to Security Sandbox Bypass with SSTI (Server Side Template Injection)
    Hoch · 8.8 CVE-2025-66299 < 1.8.0-beta.27 1.8.0-beta.27
  37. Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover
    Hoch · 8.8 CVE-2025-66296 < 1.8.0-beta.27 1.8.0-beta.27
  38. Grav Vulnerable to Arbitrary File Read to Account Takeover
    Hoch · 8.5 CVE-2024-34082 < 1.7.46 1.7.46
  39. Server Side Template Injection (SSTI) via Twig escape handler
    Hoch · 8.8 CVE-2024-28119 < 1.7.45 1.7.45
  40. Server Side Template Injection (SSTI)
    Hoch · 8.8 CVE-2024-28118 < 1.7.45 1.7.45
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