Read the docs
TI-2026-33048 Aliases CVE-2026-45233GHSA-mhrm-pq8h-qmf3

HTMLy CMS 3.1.1 Path Traversal via oldfile Parameter in Autosave

Priority LOW 33CWE-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 · High · High
Fix status
No fix listed

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

Summary

HTMLy CMS through 3.1.1 contains a path traversal vulnerability that allows low-privileged authenticated attackers to relocate arbitrary files by supplying directory traversal sequences in the oldfile parameter at the admin autosave endpoint. Attackers can pass unsanitized traversal sequences directly to file_exists() and rename() functions in admin.php without canonicalization or directory boundary enforcement to cause unintended relocation of any file writable by the web server process to an attacker-specified draft location.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.009 59th 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
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
danproshtmlyup to 3.1.1—No fix listedCNA
  • htmly Vendordanpros Affected up to 3.1.1 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45233
  2. 2026-10-03 Alias added: GHSA-mhrm-pq8h-qmf3

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-2026-15277 danpros HTMLy Delete Username Endpoint htmly.php unlink path traversal CVSS 4.0MEDIUM 5.3
  • 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