Integer Underflow (Wrap or Wraparound) Affecting spiderlabs/modsecurity package, versions [3.0.0,3.0.15)
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-16673752
- published14 May 2026
- disclosed12 May 2026
- creditfumfel
Introduced: 12 May 2026
CVE-2026-42268 (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 Integer Underflow (Wrap or Wraparound) in the @verifySSN, @verifyCPF, or @verifySVNR operators due to improper handling of unsigned integer values, which can result in an unhandled exception. An attacker can cause the application to crash by triggering an unsigned integer underflow through specially crafted input when these operators are used. This is only exploitable if a rule utilizing any of these operators is configured by the administrator.