PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-66567 AncoraThemes CVE debrief

The Unesta theme versions up to 1.5.3 contain an Unauthenticated PHP Object Injection vulnerability. This vulnerability could allow unauthenticated exploitation, potentially impacting confidentiality, integrity, and availability. Defenders responsible for Anesta theme deployments should assess exposure and prioritize patching or mitigation. The CVE record and NVD entry provide limited information about the vulnerability, so it

Vendor
AncoraThemes
Product
Anesta
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-10
Original CVE updated
2026-10-10
Advisory published
2026-10-10
Advisory updated
2026-10-10

Who should care

Defenders responsible for Anesta theme deployments should assess exposure and prioritize patching or mitigation.

Why it matters

Defenders should prioritize verifying exposure and applying patches or mitigations for the Unauthenticated PHP Object Injection vulnerability in Anesta theme versions up to 1.5.3.

  • Potential for unauthenticated exploitation
  • Possible impact on confidentiality, integrity, and availability

Technical summary

The Anesta theme versions up to 1.5.3 contain an Unauthenticated PHP Object Injection vulnerability. This vulnerability could allow unauthenticated exploitation, potentially impacting confidentiality, integrity, and availability. The vulnerability is considered critical with a CVSS score of 9.8. Defenders should prioritize verifying exposure and applying patches or mitigations.

Defensive priority

Defenders should prioritize verifying exposure and applying patches or mitigations.

Recommended defensive actions

  • Verify exposure of Anesta theme versions up to 1.5.3
  • Apply patches or mitigations for Unauthenticated PHP Object Injection vulnerability

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-66567 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-66567

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-66567 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-66567

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.