Out-of-bounds Read Affecting spiderlabs/modsecurity package, versions [,3.0.15)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-SPIDERLABSMODSECURITY-16425744
- published6 May 2026
- disclosed5 May 2026
- creditEsadCetiner
Introduced: 5 May 2026
CVE-2026-30923 (opens in a new tab)How to fix?
Upgrade spiderlabs/modsecurity to version 3.0.15 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read via the t:hexDecode transformation when processing a query string parameter containing a single character. An attacker can cause worker processes to crash by sending specially crafted requests, resulting in service disruption until the attack ceases and processes recover.