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TI-2020-13425 Aliases CVE-2020-18661GHSA-jw3g-fq47-7q3j

Cross Site Scripting (XSS) vulnerability in gnuboard5 <=v5.3.2.8 via the url parameter to bbs/login.php.

Priority LOW 30CWE-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
No fix listed

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

Summary

Cross Site Scripting (XSS) vulnerability in gnuboard5 <=v5.3.2.8 via the url parameter to bbs/login.php.

Why it matters now

EPSS 0.01135 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:sir:gnuboard:*:*:*:*:*:*:*:*up to 5.3.2.8VulnerableSir
  • cpe:2.3:a:sir:gnuboard:*:*:*:*:*:*:*:* Versions up to 5.3.2.8 Vulnerable ·Sir

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-18661
  2. 2026-10-03 Alias added: GHSA-jw3g-fq47-7q3j

References

Exploit 1

Advisory 2

  • TI-2024-27646 Gnuboard g6 6.0.7 is vulnerable to Session hijacking due to a CORS misconfiguration. CVSS 3.1CRITICAL 9.8
  • TI-2025-37999 gnuboard gnuboard4 v4.36.04 and before is vulnerable to Second-order SQL Injection via… CVSS 3.1MEDIUM 6.5
  • TI-2025-37842 Cross Site Scripting (XSS) vulnerability in Gnuboard 5.6.15 allows authenticated… CVSS 3.1MEDIUM 6.1
  • TI-2024-26175 There is an Open Redirect vulnerability in Gnuboard v6.0.4 and below via the `url` parameter in login path. CVSS 3.1MEDIUM 6.1
  • TI-2024-25109 An open redirect vulnerability in gnuboard5 v.5.5.16 allows a remote attacker to obtain… CVSS 3.1MEDIUM 6.1
  • TI-2024-25108 An open redirect vulnerability in gnuboard5 v.5.5.16 allows a remote attacker to obtain… CVSS 3.1MEDIUM 6.1
See all 38 →

Sources

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