Is CVE-2026-89413 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-89413 being exploited in the wild.

How severe is CVE-2026-89413?

High severity, with a CVSS score of 8.1, published 18 September 2026.

Which products and versions are affected?

Filter Gallery Filter Gallery up to 1.1.4.

Is there a fix for CVE-2026-89413?

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-2026-89413 attacked?

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

Am I affected by CVE-2026-89413?

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.

CVE-2026-89413: Filter Gallery authorization bypass in WordPress plugin

CVE-2026-89413 · Severity: high · CVSS 8.1 · Published 2026-09-18

The Filter Gallery WordPress plugin fails to properly authorize users before allowing deletion of gallery records. An attacker with a basic subscriber account can delete any gallery and its associated filters, images, and settings by submitting a specially crafted request that bypasses the plugin's nonce verification mechanism, causing permanent data loss.

Quick answers

Is CVE-2026-89413 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-89413 being exploited in the wild.
How severe is CVE-2026-89413?: High severity, with a CVSS score of 8.1, published 18 September 2026.
Which products and versions are affected?: Filter Gallery Filter Gallery up to 1.1.4.
Is there a fix for CVE-2026-89413?: 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-2026-89413 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-89413?: 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 an authorization bypass flaw in the Filter Gallery WordPress plugin affecting versions up to 1.1.4. The plugin fails to properly validate user authorization and has a nonce bypass vulnerability that can be exploited by omitting the nonce POST field entirely rather than submitting an invalid value. Authenticated attackers with subscriber-level privileges or higher can delete arbitrary gallery records by supplying attacker-controlled gallery IDs. The attack is network-accessible to any authenticated user and requires no additional interaction. An attacker can achieve complete deletion of gallery data, filters, image mappings, and associated settings.

Affected products

Filter Gallery Filter Gallery up to 1.1.4

Timeline

2026-09-18: disclosed

References

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