CVE-2026-41195: mosparo: Rule package source URL stored SSRF enables internal HTTP probing

Severity: medium (CVSS 5.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-12 · updated 2026-06-17
Weakness: CWE-918

Description

mosparo is the modern solution to protect your online forms from spam. Prior to 1.4.13, the automatic rule package source URL feature allows a project member with the editor role to store an attacker-controlled URL that the server later fetches. Because the server follows http/https redirects and does not restrict private or loopback destinations, this becomes a stored SSRF primitive that can be turned into an internal HTTP probing oracle. This vulnerability is fixed in 1.4.13.

Affected products

mosparo/mosparo: before 1.4.13

References

https://github.com/mosparo/mosparo/security/advisories/GHSA-92fh-26qf-r8rg
https://github.com/mosparo/mosparo/security/advisories/GHSA-92fh-26qf-r8rg

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