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TI-2021-02762 Aliases CVE-2021-3831GHSA-xq54-j4gh-pm4j

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

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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

Why it matters now

EPSS 0.01841 79th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed gnuboard/gnuboard5 (gnuboard): 5.4.20

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
gnuboardgnuboard/gnuboard5before 5.4.205.4.20Patch availableCNA
  • gnuboard/gnuboard5 Vendorgnuboard Affected before 5.4.20 Fixed in 5.4.20 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gnuboard:gnuboard5:*:*:*:*:*:*:*:*before 5.4.20Vulnerablegnuboard
  • cpe:2.3:a:gnuboard:gnuboard5:*:*:*:*:*:*:*:* Versions before 5.4.20 Vulnerable ·gnuboard

Remediation

  • Fix · CNA gnuboard/gnuboard5 (gnuboard) Fixed in 5.4.20

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3831
  2. 2026-10-03 Alias added: GHSA-xq54-j4gh-pm4j

References

Exploit 1

Patch 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences