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Permalink CVE-2026-42268
8.2 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Attack Requirement (AT): Present (P)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): None (N)
  • Vulnerable System Impact Integrity (VI): None (N)
  • Vulnerable System Impact Availability (VA): High (H)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Attack Requirement (MAT): Present (P)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): None (N)
  • Modified Vulnerable System Impact Integrity (MVI): None (N)
  • Modified Vulnerable System Impact Availability (MVA): High (H)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
updated 7 hours ago by @LeSuisse Activity log
  • Created suggestion 13 hours ago
  • @LeSuisse ignored
    2 packages
    • modsecurity-crs
    • modsecurity_standalone
    7 hours ago
  • @LeSuisse accepted 7 hours ago
  • @LeSuisse published on GitHub 7 hours ago
ModSecurity: Unsigned integer underflow in @verifySSN / @verifyCPF / @verifySVNR operators

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.0 to before 3.0.15, there is an unhandled exception (std::out_of_range) caused by unsigned integer underflow in libmodsecurity3 if the user (administrator) uses a rule any of @verifySSN, @verifyCPF, or @verifySVNR. This vulnerability is fixed in 3.0.15.

Affected products

ModSecurity
  • ==>= 3.0.0, < 3.0.15

Matching in nixpkgs

Ignored packages (2)

pkgs.modsecurity-crs

The OWASP ModSecurity Core Rule Set is a set of generic attack detection rules for use with ModSecurity or compatible web application firewalls.

Package maintainers

Permalink CVE-2026-30923
updated 1 week ago by @LeSuisse Activity log
  • Created suggestion 1 week ago
  • @LeSuisse ignored
    2 packages
    • modsecurity-crs
    • modsecurity_standalone
    1 week ago
  • @LeSuisse accepted 1 week ago
  • @LeSuisse published on GitHub 1 week ago
libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a single character. An attacker can exploit this to crash worker processes, causing a denial of service. Service resumes once the attack stops as worker processes recover from the segfault. All versions before 3.0.15 of libModSecurity3 are affected. This has been patched in version 3.0.15.

Affected products

ModSecurity
  • ==< 3.0.15

Matching in nixpkgs

Ignored packages (2)

pkgs.modsecurity-crs

The OWASP ModSecurity Core Rule Set is a set of generic attack detection rules for use with ModSecurity or compatible web application firewalls.

Package maintainers