Quick answers
- Is CVE-2026-9557 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9557 being exploited in the wild.
- How severe is CVE-2026-9557?
- Medium severity, with a CVSS score of 6.4, published 29 May 2026.
- Which products and versions are affected?
- Mautic >= 4.0.0, < 4.4.20; 5.x < 5.2.11; 6.x < 6.0.9; 7.x < 7.1.2, >= 4.0.0, <= 4.4.13; >= 5.0.0, < 5.2.11; >= 6.0.0, < 6.0.9; >= 7.0.0, < 7.1.2; mautic/core (Packagist) ECOSYSTEM:introduced=4.0.0,last_affected=4.4.13.
- Is there a fix for CVE-2026-9557?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-9557 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9557?
- Check whether you run Mautic or mautic/core (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in the MauticFocusBundle due to insufficient validation of user-supplied URLs. An authenticated attacker with access to the Mautic panel can provide a malicious URL that the server will then attempt to fetch. This can be used for internal port probing, network reconnaissance, or accessing internal services that are not exposed to the public internet. The vulnerability is tracked as CVE-2026-9557 and has been patched in versions 4.4.20 (ELTS), 5.2.11, 6.0.9, and 7.1.2.
Affected products
- Mautic Mautic >= 4.0.0, <= 4.4.13; >= 5.0.0, < 5.2.11; >= 6.0.0, < 6.0.9; >= 7.0.0, < 7.1.2
Identifiers
- CVE-2026-9557
- GHSA-jmv8-8j9j-rcpc
Timeline
- 2026-05-29: disclosed: NVD publication date
- 2026-07-02: advisory: GitHub Advisory published/reviewed