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PatchSiren cyber security CVE debrief

CVE-2026-62076 The4 CVE debrief

Unauthenticated PHP Object Injection vulnerability in Kalles theme versions <= 1.1.7.1. CVE-2026-62076 has a CVSS score of 9.8 and is considered CRITICAL. Defenders should assess exposure and prioritize remediation or mitigation. The vulnerability was reported by Patchstack and documented in the NVD. However, details on affected versions and remediation are limited, suggesting a need for verification of exposure and careful

Vendor
The4
Product
Kalles
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 and security teams responsible for WordPress installations with the Kalles theme should assess exposure and prioritize remediation or mitigation.

Why it matters

CVE-2026-62076 is a critical unauthenticated PHP Object Injection vulnerability in Kalles theme versions <= 1.1.7.1. Defenders should prioritize verification of exposure and remediation due to the high CVSS score and potential for unauthenticated attacks.

  • Potential for unauthenticated attacks
  • High CVSS score indicating critical vulnerability
  • Limited information on affected versions and remediation

Technical summary

CVE-2026-62076 is an unauthenticated PHP Object Injection vulnerability in Kalles theme versions <= 1.1.7.1. The vulnerability has a CVSS score of 9.8 and is considered CRITICAL. The vulnerability was reported by Patchstack and is documented in the NVD.

Defensive priority

Defenders should prioritize verification of exposure and remediation due to the high CVSS score and potential for unauthenticated attacks.

Recommended defensive actions

  • Verify exposure by checking if Kalles theme versions <= 1.1.7.1 are in use
  • Assess the vulnerability's impact on the organization's systems and data
  • Prioritize remediation or mitigation of the vulnerability

Evidence notes

The vulnerability was reported by Patchstack and is documented in the NVD. However, details on affected versions and remediation are limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62076 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62076

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

  • CVE-2026-62076 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62076

    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.