TI-2026-49919 Aliases CVE-2026-71249 GHSA-pf9g-3vw7-vgqf

299Ko - Unauthenticated Reflected XSS in Public Contact Form

LOW 27CWE-79Published 2026-08-05 · Updated 2026-08-10

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 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

299Ko's public contact form (plugin/contact/controllers/ContactController.php, home) sets raw POST field values (name, firstname, email, message) into the page template with no sanitization. The template engine's variable output function (common/Template.php, _show_var) echoes values with no htmlspecialchars call, and the sink template (contact.tpl) outputs these values unescaped into an HTML attribute and a textarea.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00253 16th percentileScored 2026-11-07

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

Vendor	Product	Affected versions	Fixed in	Status	Source
299Ko	299Ko	all versions	—	No fix listed	CNA

299Ko Vendor299Ko Affected all versions Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-71249
2026-10-03 Alias added: GHSA-pf9g-3vw7-vgqf

References

Advisory 1

https://github.com/search?q=299ko&type=repositories

TI-2025-07564 299Ko CMS File Management view unrestricted upload CVSS 4.0MEDIUM 5.1

Sources

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