Path Traversal in Danpros Htmly
CVE-2026-45233
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Danpros Htmly — versions 0
Weakness classification (CWE)
References
- gist.github.com/mrgr4yhat/c4df971eafa272ac8c86c15e2829b7fe (technical-description, exploit)
- www.vulncheck.com/advisories/htmly-cms-path-traversal-via-oldfile-parameter-in-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-45233?
- CVE-2026-45233 is a high-severity vulnerability in Danpros Htmly, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-06-25.
- How severe is CVE-2026-45233?
- High severity. CVSS v3 base score is 8.1 out of 10.