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CVE-2026-18645— danpros HTMLy Admin Content Endpoint admin.php add_content path traversal

Quick assessment

Affected
danpros HTMLy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HTMLy是HTMLy团队开源的一个内容管理系统。 HTMLy 3.1.1及之前版本存在路径遍历漏洞，该漏洞源于对文件/system/admin/admin.php中参数oldfile的错误操作，可能导致路径遍历攻击。

CVSS 5.4 · Medium EPSS 0.54% · P44

Affected Version Matrix 2

VendorProduct Version RangeStatus
danpros HTMLy 3.1.0 affected
3.1.1 affected
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I. Basic Information for CVE-2026-18645

Vulnerability Information
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Vulnerability Title
danpros HTMLy Admin Content Endpoint admin.php add_content path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in danpros HTMLy up to 3.1.1. This affects the function add_content of the file /system/admin/admin.php of the component Admin Content Endpoint. Performing a manipulation of the argument oldfile results in path traversal. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
HTMLy 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HTMLy是HTMLy团队开源的一个内容管理系统。 HTMLy 3.1.1及之前版本存在路径遍历漏洞，该漏洞源于对文件/system/admin/admin.php中参数oldfile的错误操作，可能导致路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
danpros HTMLy 3.1.0 cpe:2.3:a:htmly:htmly:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-18645

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III. Intelligence Information for CVE-2026-18645

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Vendor Advisories for CVE-2026-18645 (1)

Same Patch Batch · danpros · 2026-08-03 · 3 CVEs total

CVE-2026-18644 5.4 MEDIUM danpros HTMLy Delete Username Endpoint htmly.php unlink path traversal
CVE-2026-18646 5.3 MEDIUM danpros HTMLy Author Name htmly.php path traversal

IV. Related Vulnerabilities

Same product: HTMLy
Same vendor: danpros
Same weakness: CWE-22

V. Comments for CVE-2026-18645

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