CVE-2026-45233 | HTMLy CMS through 3.1.1 contains a path traversal vulnerabil… | CVSS 8.1 HIGH

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.

Metadata

CVE ID: CVE-2026-45233
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-05-11 14:14 UTC
Published: 2026-06-25 15:50 UTC
Last updated: 2026-06-25 18:11 UTC
Primary CWE: CWE-22
Improper Limitation of a Pathname to a Restricted Directory …
Vendor / Product: danpros / htmly
Sources: cve.org · NVD

Severity & Metrics

8.1 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
danpros	htmly	—	0 ≤ 3.1.1

Weakness (CWE)

CWE	Source	Description
CWE-22	cna	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.2	HIGH	4.0	cna	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

References (2)