Quick answers
- Is CVE-2026-112859 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-112859 being exploited in the wild.
- How severe is CVE-2026-112859?
- Critical severity, with a CVSS score of 9.8, published 23 October 2026.
- Which products and versions are affected?
- ThemeREX Group Little Birdies up to and including 1.3.16.
- Is there a fix for CVE-2026-112859?
- 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-2026-112859 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-112859?
- Check whether you run ThemeREX Group Little Birdies 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
This is a PHP object injection vulnerability (CWE-502: Deserialization of Untrusted Data) in the Little Birdies WordPress theme that affects all versions up to and including 1.3.16. The vulnerability is exploitable by unauthenticated attackers over the network with no user interaction required. A successful exploit grants the attacker arbitrary code execution on the server.
Affected products
- ThemeREX Group Little Birdies up to and including 1.3.16
Timeline
- 2026-02-13: disclosed: Vulnerability reported
- 2026-10-21: advisory: Public disclosure
- 2026-10-23: disclosed