CVE-2026-57940CWE-918

HTMLy 3.1.1 contains a Server-Side Request Forgery (SSRF) vulnerability in the RSS feed import functionality

Low · published June 26, 2026

CVSS v4.0
2.1
EPSS
0%
Percentile
31.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
2.1 · LOW
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:N/R:A/V:D/RE:L/U:Clear
EPSS
0.00388 · 31.7th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-06-26T13:08Z
EPSS history
Timeline
  • 26 JUN 13:08Z
    HTMLy 3.1.1 contains a Server-Side Request Forgery (SSRF) vulnerability in the RSS feed import functionality
    cvelistv5