CVE-2026-57940 Details
Description
HTMLy 3.1.1 contains a Server-Side Request Forgery (SSRF) vulnerability in the RSS feed import functionality. The function get_feed() in system/admin/admin.php passes user-supplied $feed_url directly to file_get_contents() without any validation. An authenticated attacker with administrative privileges can exploit this by entering a crafted URL (e.g., http://dnslog.example.com, file:///etc/passwd, or http://169.254.169.254 in cloud contexts) via Tools -> Import RSS. The server will then make a request to the attacker-controlled target.
A Server-Side Request Forgery (SSRF) vulnerability has been identified in HTMLy version 3.1.1. The issue arises in the RSS feed import feature, specifically within the 'get_feed()' function located in 'system/admin/admin.php'. This function directly passes user-supplied feed URLs to 'file_get_contents()' without proper validation. An authenticated attacker with administrative rights can exploit this vulnerability by entering a malicious URL, such as one pointing to a DNS logging service, a local file like '/etc/passwd', or a cloud metadata endpoint, through the Tools -> Import RSS menu. The server will then make a request to the attacker-controlled target.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 26, 2026CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/danpros/htmly/blob/c8b7ed9af39a266b256759becf26dba6a59e11e6/system/admin/admin.php#L1549-L1551 | [email protected] | Source CodeVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| HTMLy | 3.1.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | New CVE Received | [email protected] |
| Jun 26, 2026 | CVE Modified | CISA-ADP |