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High · 7.1 Scanner template Public exploit CVE-2021-3831 EUVD-2021-27078GHSA-xq54-j4gh-pm4j

Cross-site Scripting (XSS) - Reflected in gnuboard/gnuboard5

Published Dec 14, 2021 · Updated Aug 3, 2024 · Assigned by @huntrdev

Vendor: Gnuboard Product: gnuboard/gnuboard5

Description

gnuboard5 is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected products

VendorProductAffectedFixed
gnuboard gnuboard/gnuboard5 unspecified – < 5.4.20 5.4.20

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

References