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TI-2023-00520 Aliases CVE-2023-0549GHSA-x86c-f9fh-89cx

YAFNET Private Message PostPrivateMessage cross site scripting

Priority LOW 26CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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

A vulnerability, which was classified as problematic, has been found in YAFNET up to 3.1.10. This issue affects some unknown processing of the file /forum/PostPrivateMessage of the component Private Message Handler. The manipulation of the argument subject/message leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.1.11 is able to address this issue. The identifier of the patch is 2237a9d552e258a43570bb478a92a5505e7c8797. It is recommended to upgrade the affected component. The identifier VDB-219665 was assigned to this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0071 53rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—YAFNET3.1.0; 3.1.1; 3.1.2; 3.1.3; 3.1.4; 3.1.5; 3.1.6; 3.1.7; 3.1.8; 3.1.9; 3.1.10—No fix listedCNA
  • YAFNET Vendor— Affected 3.1.0; 3.1.1; 3.1.2; 3.1.3; 3.1.4; 3.1.5; 3.1.6; 3.1.7; 3.1.8; 3.1.9; 3.1.10 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:yetanotherforum:yaf.net:*:*:*:*:*:*:*:*3.1.0 – 3.1.10VulnerableYetanotherforum
  • cpe:2.3:a:yetanotherforum:yaf.net:*:*:*:*:*:*:*:* Versions 3.1.0 – 3.1.10 Vulnerable ·Yetanotherforum

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-0549
  2. 2026-10-03 Alias added: GHSA-x86c-f9fh-89cx

References

Exploit 2

Patch 2

  • TI-2023-00616 YAFNET Signature cross site scripting CVSS 3.1MEDIUM 5.4

Sources

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