CVE-2026-45233
HTMLy CMS 3.1.1 Path Traversal via oldfile Parameter in Autosave
- State
- Published
- Severity
- 7.2 High
- Published
- Jun 25, 2026
- Updated
- Jul 28, 2026
- Reserved
- May 11, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.2 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
htmlydanpros |
|
References
- https://gist.github.com/mrgr4yhat/c4df971eafa272ac8c86c15e2829b7fetechnical-descriptionexploit
- https://www.vulncheck.com/advisories/htmly-cms-path-traversal-via-oldfile-parameter-in-autosavethird-party-advisory
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