PT-2021-22358 · Grav · Grav

Mahagr · Published 2021-10-27 · Updated 2021-11-01 · CVE-2021-3904

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions grav versions prior to 1.7.24

Description The issue is related to Improper Neutralization of Input During Web Page Generation, also known as Cross-site Scripting. This allows for the injection of malicious scripts into web pages. No information is provided about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited.

Recommendations For versions prior to 1.7.24, update to version 1.7.24 or later to resolve the issue. As a temporary workaround, consider restricting user input to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-3904

GHSA-5JXC-HMQF-3F73

Affected Products

Grav

References · 8

• 🔥 https://huntr.dev/bounties/b1182515-d911-4da9-b4f7-b4c341a62a8d · Exploit
• https://github.com/getgrav/grav/commit/afc69a3229bb6fe120b2c1ea27bc6f196ed7284d · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-3904 · Security Note
• https://osv.dev/vulnerability/GHSA-5jxc-hmqf-3f73 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-3904 · Vendor Advisory
• https://github.com/getgrav/grav · Note
• https://t.me/cvenotify/22526 · Telegram Post
• https://t.me/cibsecurity/31339 · Telegram Post