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PatchSiren cyber security CVE debrief

CVE-2026-112853 axiomthemes CVE debrief

A critical vulnerability was found in the WordPress Hallelujah theme, versions up to and including 1.1.1, which allows for PHP Object Injection due to deserialization of untrusted data. This issue, tracked as CVE-2026-112853, has a CVSS score of 9.8, indicating a high severity level. The vulnerability is exploitable over the network with low attack complexity and requires no user interaction or privileges.

Vendor
axiomthemes
Product
Hallelujah
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-23
Original CVE updated
2026-10-23
Advisory published
2026-10-23
Advisory updated
2026-10-23

Who should care

WordPress administrators and users of the Hallelujah theme should assess their exposure and take necessary actions to mitigate this vulnerability. Security teams responsible for monitoring and patching vulnerabilities in content management systems like WordPress should prioritize this CVE.

Why it matters

CVE-2026-112853 is a critical vulnerability in the WordPress Hallelujah theme that requires immediate attention due to its potential for severe exploitation. WordPress administrators and security teams should assess exposure and apply necessary patches or mitigations.

  • Potential for arbitrary code execution on affected systems.
  • Risk of data tampering and unauthorized access.
  • Possible full control of the affected WordPress installations.
  • Need for immediate patching or mitigation to prevent exploitation.

Technical summary

The Hallelujah theme for WordPress, versions up to and including 1.1.1, is vulnerable to PHP Object Injection. This is due to insecure deserialization of untrusted data. Successful exploitation could lead to arbitrary code execution, data tampering, and potentially, full control of the affected system.

Defensive priority

Immediate attention is required to assess exposure and apply patches or mitigations to prevent potential exploitation.

Recommended defensive actions

  • Assess exposure of the Hallelujah theme in your WordPress deployments.
  • Verify if the installed version of the Hallelujah theme is 1.1.1 or earlier.
  • Apply patches or updates provided by the vendor if available.
  • Monitor for potential exploitation attempts targeting this vulnerability.

Evidence notes

The CVE Program and NVD records confirm the vulnerability in the Hallelujah theme. However, details on exploitation or affected users are not provided in the source corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-112853 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-112853

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

  • CVE-2026-112853 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-112853

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

Supplemental references

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.