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TI-2026-15277 Aliases CVE-2026-18644GHSA-g2qx-6r2x-hr8v

danpros HTMLy Delete Username Endpoint htmly.php unlink path traversal

Priority MEDIUM 57CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability was identified in danpros HTMLy up to 3.1.1. Affected by this issue is the function unlink of the file /system/htmly.php of the component Delete Username Endpoint. Such manipulation of the argument File leads to path traversal. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00542 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
danprosHTMLy3.1.0; 3.1.1—No fix listedCNA
  • HTMLy Vendordanpros Affected 3.1.0; 3.1.1 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:htmly:htmly:*:*:*:*:*:*:*:*——Htmly
  • cpe:2.3:a:htmly:htmly:*:*:*:*:*:*:*:* Versions — — ·Htmly

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18644
  2. 2026-10-03 Alias added: GHSA-g2qx-6r2x-hr8v

References

Exploit 1

  • TI-2026-15279 danpros HTMLy Author Name htmly.php path traversal CVSS 4.0MEDIUM 6.9
  • TI-2026-15278 danpros HTMLy Admin Content Endpoint admin.php add_content path traversal CVSS 4.0MEDIUM 5.3
  • TI-2026-33048 HTMLy CMS 3.1.1 Path Traversal via oldfile Parameter in Autosave CVSS 4.0HIGH 7.2
  • TI-2026-41706 Server-side request forgery in danpros HTMLy CVSS 4.0LOW 2.1

Sources

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