Is CVE-2026-18579 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-18579 being exploited in the wild.

How severe is CVE-2026-18579?

High severity, with a CVSS score of 7.2, published 11 September 2026.

Which products and versions are affected?

WP Photo Album Plus up to and including 9.2.08.003.

Is there a fix for CVE-2026-18579?

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-2026-18579 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-18579?

Check whether you run WP Photo Album Plus 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.

CVE-2026-18579: WP Photo Album Plus stored XSS via X-Forwarded-For parameter

CVE-2026-18579 · Severity: high · CVSS 7.2 · Published 2026-09-11

WP Photo Album Plus is a popular WordPress plugin for managing and displaying photo galleries. An unauthenticated attacker can inject malicious scripts that execute in the browsers of users who visit affected pages, potentially allowing credential theft, session hijacking, or website defacement. The vulnerability exploits a flawed nonce check that logs user-supplied HTTP headers without proper sanitization.

Technologies: WP Photo Album Plus. Vendors: WP Photo Album Plus.

Quick answers

Is CVE-2026-18579 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-18579 being exploited in the wild.
How severe is CVE-2026-18579?: High severity, with a CVSS score of 7.2, published 11 September 2026.
Which products and versions are affected?: WP Photo Album Plus up to and including 9.2.08.003.
Is there a fix for CVE-2026-18579?: 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-2026-18579 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-18579?: Check whether you run WP Photo Album Plus 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

The vulnerability is a Stored Cross-Site Scripting (XSS) flaw arising from insufficient input sanitization and output escaping of the 'HTTP_X_FORWARDED_FOR' header. The vulnerable code is in the getshortcodedrenderedfenodelay AJAX action, which intentionally fails nonce validation; this failure triggers wppa_log() to write the attacker-controlled header value directly to disk. An unauthenticated attacker can send crafted requests with malicious payloads in the X-Forwarded-For header via the wp_ajax_nopriv_wppa endpoint. When logged data is later retrieved and displayed on the front-end without proper escaping, the injected script executes in visitors' browsers. The vulnerability affects all versions up to and including 9.2.08.003; patch status is not explicitly stated but should be verified against the vendor's advisory.

Affected products

WP Photo Album Plus WP Photo Album Plus up to and including 9.2.08.003

Timeline

2026-09-11: disclosed

References

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