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CVE-2026-65576 – Unauthenticated PHP Object Injection – Adrena WordPress Theme <= 1.2.14

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Summary

CVE-2026-65576 is an unauthenticated PHP Object Injection vulnerability in the Adrena WordPress theme by AncoraThemes, affecting all versions up to and including 1.2.14. The flaw stems from deserialization of untrusted data (CWE-502) and carries a CVSS v3.1 base score of 9.8 (Critical), allowing complete compromise of an affected site.

Technical details

  • Root cause: Unsafe deserialization of untrusted, attacker-controlled data (CWE-502), allowing injection of malicious PHP objects.
  • Trigger conditions: No authentication is required; the vulnerability is reachable by an unauthenticated actor.
  • Attack vector: Network (remotely exploitable), low attack complexity, no privileges and no user interaction required.
  • Impact: High impact to confidentiality, integrity, and availability; when a suitable POP gadget chain is present, PHP Object Injection can lead to full site compromise.

Affected software

  • Adrena WordPress Theme (AncoraThemes) — versions up to and including 1.2.14.

Severity

  • CVSS v3.1 base score: 9.8 (Critical)
  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: No fixed version is listed in the public advisory at time of writing. Monitor AncoraThemes and the WordPress theme repository for an update newer than 1.2.14 and apply it as soon as it is released.
  • If no patch: Restrict or virtually patch the affected theme at the network/WAF layer, consider disabling or removing the Adrena theme until a fixed release is available, and limit exposure of the affected site to untrusted networks.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Raw HTTP response body: /wp-content/themes/adrena/

References

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How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
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