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PatchSiren cyber security CVE debrief

CVE-2026-62045 ThemeREX Group CVE debrief

The CVE-2026-62045 vulnerability is a PHP Object Injection issue in the WordPress Booklovers theme, version 2.13.0 and earlier. This vulnerability is a result of deserialization of untrusted data, allowing for potential object injection. The CVSS score for this vulnerability is 9.8, indicating a critical severity level. Defenders should be aware of this vulnerability and take necessary actions to mitigate it, including patching or updating the Booklovers theme to a version beyond 2.13.0, implementing input validation and sanitization, and monitoring for suspicious activity related to deserialization of untrusted data. The evidence for this vulnerability comes from the CVE Program

Vendor
ThemeREX Group
Product
Booklovers
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 WordPress installations using the Booklovers theme, version 2.13.0 or earlier, should be aware of this vulnerability and take necessary actions to mitigate it.

Why it matters

CVE-2026-62045 is a critical PHP Object Injection vulnerability in the WordPress Booklovers theme, version 2.13.0 and earlier. Defenders should prioritize patching or mitigating this vulnerability due to its critical severity and potential for object injection, which could lead to various security consequences.

  • Potential for object injection, allowing attackers to manipulate data or execute arbitrary code.
  • Critical severity level with a CVSS score of 9.8, indicating a high risk to affected systems.
  • Possible exploitation through deserialization of untrusted data, which could lead to security breaches.

Technical summary

The CVE-2026-62045 vulnerability is caused by deserialization of untrusted data in the WordPress Booklovers theme, version 2.13.0 and earlier. This allows for potential object injection, which could lead to various security consequences. The vulnerability has a CVSS score of 9.8, indicating a critical severity level.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability as soon as possible due to its critical severity and potential for object injection.

Recommended defensive actions

  • Patch or update the Booklovers theme to a version beyond 2.13.0.
  • Implement input validation and sanitization to prevent object injection.
  • Monitor for suspicious activity related to deserialization of untrusted data.

Evidence notes

The evidence for this vulnerability comes from the CVE Program record and the NVD vulnerability detail page. The CVE Program record provides the official CVE metadata, while the NVD page offers a detailed vulnerability assessment.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62045 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62045

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

  • CVE-2026-62045 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62045

    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.