CVE-2026-27437

CRITICALNVD 9.89.8—

9.8

Deserialization of Untrusted Data vulnerability in ThemeREX Tennis Club tennis-sportclub allows Object Injection.This issue affects Tennis Club: from n/a through <= 1.2.3.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 19.2%
KEV: Not listed

Published

March 5, 2026

Last Modified

April 22, 2026

Advisory Details (1)

Auto-updated May 12, 2026

Patch available.

generic Patch Available

PHP Object Injection in WordPress Tennis Club Theme - Patchstack

https://patchstack.com/database/Wordpress/Theme/tennis-sportclub/vulnerability/wordpress-tennis-club-theme-1-2-3-php-object-injection-vulnerability?_s_id=cve

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 UTCepss_batch
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2026-05-24 16:59 UTCepss_batch
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2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-27437?

CVE-2026-27437 is a critical vulnerability published on March 5, 2026. Deserialization of Untrusted Data vulnerability in ThemeREX Tennis Club tennis-sportclub allows Object Injection.This issue affects Tennis Club: from n/a through <= 1.2.3.

When was CVE-2026-27437 disclosed?

CVE-2026-27437 was first published in the National Vulnerability Database on March 5, 2026, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-27437 actively exploited?

CVE-2026-27437 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-27437?

CVE-2026-27437 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2026-27437?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27437, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-27437

📅 Published

🔄 Last Modified

📋 Advisory Details (1)