Quick answers
- Is CVE-2026-56047 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-56047 being exploited in the wild.
- How severe is CVE-2026-56047?
- High severity, with a CVSS score of 7.1, published 26 June 2026.
- Which products and versions are affected?
- Perfmatters <= 2.6.3.
- Is there a fix for CVE-2026-56047?
- 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-2026-56047 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-56047?
- Check whether you run Perfmatters 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 Reflected Cross-Site Scripting (XSS) vulnerability exists in the Perfmatters WordPress plugin due to improper neutralization of user-supplied input during web page generation (CWE-79). The flaw allows an unauthenticated remote attacker to inject malicious scripts into the application. Successful exploitation requires a victim to interact with a specially crafted link or page. Once executed, the script runs within the context of the victim's browser session, potentially allowing the attacker to bypass same-origin policy protections and access sensitive data or perform administrative actions. The issue is resolved in version 2.6.4.
Affected products
- Perfmatters perfmatters <= 2.6.3
Timeline
- 2026-05-29: other: Reported by researcher dutafi
- 2026-06-25: advisory: Patchstack advisory published
- 2026-06-26: disclosed: NVD publication date