CVE-2021-3904
5.4 MEDIUMgrav is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published: 2021-10-27 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 5.4 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CWE
- CWE-79
Affected products
| Vendor | Product |
|---|---|
| getgrav | grav |
Description
grav is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3904
- [Patch]https://github.com/getgrav/grav/commit/afc69a3229bb6fe120b2c1ea27bc6f196ed7284d
- [Patch]https://huntr.dev/bounties/b1182515-d911-4da9-b4f7-b4c341a62a8d
- [Patch]https://github.com/getgrav/grav/commit/afc69a3229bb6fe120b2c1ea27bc6f196ed7284d
- [Patch]https://huntr.dev/bounties/b1182515-d911-4da9-b4f7-b4c341a62a8d
Related CVEs
Same vendor
- CVE-2026-42844 — Grav is a file-based Web platform (8.8 HIGH)
- CVE-2026-42843 — Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content, media, configuration, users, and... (8.8 HIGH)
- CVE-2021-3818 — grav is vulnerable to Reliance on Cookies without Validation and Integrity Checking (5.3 MEDIUM)
- CVE-2021-3799 — grav-plugin-admin is vulnerable to Improper Restriction of Rendered UI Layers or Frames (5.4 MEDIUM)
Same CWE
- CVE-2026-12425 — Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in PowerSchool Employee Access ...
- CVE-2024-30476 — PowerStore contains a Stored Cross-Site Scripting Vulnerability in the PowerStore Manager (5.4 MEDIUM)
- CVE-2026-54198 — Unauthenticated Cross Site Scripting (XSS) in Media LIbrary Assistant <= 3.35 versions (7.1 HIGH)
- CVE-2026-54191 — Unauthenticated Cross Site Scripting (XSS) in Pods <= 3.3.8 versions (7.1 HIGH)
- CVE-2026-39437 — Unauthenticated Cross Site Scripting (XSS) in Min Max Step Quantity Limits Manager for WooCommerce <= 5.2.2 versions (7.1 HIGH)