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PatchSiren cyber security CVE debrief

CVE-2026-57713 Marcus (aka @msykes) CVE debrief

A Deserialization of Untrusted Data vulnerability exists in the Events Manager plugin, specifically in versions up to and including 7.3.6. This vulnerability allows for Object Injection. The issue arises from the deserialization of untrusted data, which can lead to security risks. Users of the Events Manager plugin are advised to update to a patched version to mitigate this vulnerability. Administrators should be aware of the potential impact and take necessary actions to secure their installations. The CVE record and NVD entry provide further details on this vulnerability.

Vendor
Marcus (aka @msykes)
Product
Events Manager
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-13
Original CVE updated
2026-07-13
Advisory published
2026-07-13
Advisory updated
2026-07-13

Who should care

Administrators and users of the Events Manager plugin, especially those using versions up to and including 7.3.6, should be aware of this vulnerability and take necessary actions to secure their installations. This includes updating to a patched version, reviewing and monitoring plugin usage, and implementing additional security measures. Security teams should prioritize this vulnerability due to its high severity level and potential impact on plugin deployments.

Technical summary

The CVE-2026-57713 vulnerability is classified as Deserialization of Untrusted Data. It affects the Events Manager plugin, allowing for Object Injection. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 8.8, indicating a high severity level. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The vulnerability arises from the deserialization of untrusted data, which can lead to security risks. Defenders should review the official advisory and implement additional security measures.

Defensive priority

High

Recommended defensive actions

  • Update the Events Manager plugin to a version that is not vulnerable.
  • Review and monitor the plugin's usage and data inputs to prevent potential exploitation.
  • Implement additional security measures such as input validation and data sanitization.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-13T10:16:38.500Z and has not been modified since then. The NVD entry is currently being reviewed. Evidence is limited to CVE and NVD data. Defenders should verify affected product deployments, review official advisories, and plan updates or mitigations. Additional security measures such as input validation and data sanitization are recommended.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-57713 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-57713

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

  • CVE-2026-57713 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-57713

    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.