Quick answers
- Is CVE-2026-73993 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73993 being exploited in the wild.
- How severe is CVE-2026-73993?
- Critical severity, with a CVSS score of 9.8, published 20 August 2026.
- Which products and versions are affected?
- FundEngine FundEngine <=1.7.9.
- Is there a fix for CVE-2026-73993?
- A patch was published on 2026-08-19: Version 1.8.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-73993 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-73993?
- Check whether anything you run is named in the advisory. 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
The vulnerability is a PHP object injection (deserialization) flaw in FundEngine versions 1.7.9 and earlier. It allows unauthenticated network-based attackers to manipulate how the plugin processes serialized data, leading to arbitrary code execution on the server. No authentication or user interaction is required to exploit this vulnerability. An attacker can leverage this to run malicious code with the web server's privileges, compromising the entire site. The vulnerability was patched in version 1.8.0.
Affected products
- FundEngine FundEngine <=1.7.9
Timeline
- 2026-08-20: disclosed
- 2026-08-19: patched: Version 1.8.0