CVE-2026-125871: MISP sourcecache module SSRF allows fetching arbitrary internal URLs via attribute enrichment

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 10 Nov 2026. If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?

0.3%

EPSS score, percentile 19.3 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

6.3 Medium

CVSS v4.0 base score, given by the CNA

What should I do?

The fix introduces a URL validation gate (is_safe_url) that is invoked before any archiving request is made. Full textSolution from the CVE record.

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

• before 3.0.13

Versions by product

Source: CISA KEV 2026.11.10, as of 10 Nov 2026; FIRST EPSS, as of 12 Nov 2026; CVE List, as of 12 Nov 2026. About the data.

Description

MISP sourcecache module SSRF allows fetching arbitrary internal URLs via attribute enrichment

The sourcecache expansion module in MISP Modules (misp-modules) contains a Server-Side Request Forgery (SSRF) vulnerability. When a user with permission to create or modify attributes of type 'link' or 'url' submits an attribute value, the module passes the URL directly to its internal archiving function without any validation of the target address. An attacker can therefore craft a URL pointing to loopback addresses (e.g., 127.0.0.1), private network ranges, link-local addresses, or cloud metadata endpoints (e.g., 169.254.169.254). The MISP server will issue an HTTP request to that target and store the response body in the event, effectively exfiltrating data from internal services to the attacker through the MISP interface. Non-HTTP schemes such as file:// are also accepted, potentially allowing local file disclosure. The vulnerability requires an authenticated MISP user with the ability to create or edit attributes of the affected types. The security impact is information disclosure from internal services reachable by the MISP server, including sensitive data such as cloud credentials, internal application data, or local files.

Source: CVE List, as of 12 Nov 2026. About the data.

What to do

Advisories and patches

• Security patch (Patch)

Solution (from the CVE record)

The fix introduces a URL validation gate (is_safe_url) that is invoked before any archiving request is made. The function restricts the scheme to http or https, resolves the hostname via DNS, and verifies that every resolved IP address is globally routable (i.e., not loopback, private, link-local, or otherwise non-global). If any check fails, the module returns an error and the fetch is never performed, preventing the server from being directed to internal or non-HTTP targets.

This summary is based on the CVE record as of 12 Nov 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Source: CVE List, as of 12 Nov 2026. About the data.

Timeline