CVE-2026-33691 | OWASP coreruleset up to 3.3.8/4.24.x Whitespace case sensitivity

VDB-354142 · CVE-2026-33691 · GCVE-0-2026-33691 OWASP CORERULESET UP TO 3.3.8/4.24.X WHITESPACE CASE SENSITIVITY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.6 $0-$5k 3.00+ Summaryinfo A vulnerability described as problematic has been identified in OWASP coreruleset up to 3.3.8/4.24.x. This affects an unknown function of the component Whitespace Handler. Executing a manipulation can lead to case sensitivity. This vulnerability is tracked as CVE-2026-33691. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended. Detailsinfo A vulnerability classified as problematic was found in OWASP coreruleset up to 3.3.8/4.24.x. This vulnerability affects an unknown code block of the component Whitespace Handler. The manipulation with an unknown input leads to a case sensitivity vulnerability. The CWE definition for the vulnerability is CWE-178. The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results. As an impact it is known to affect confidentiality. The advisory is available at seclists.org. This vulnerability was named CVE-2026-33691. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. Upgrading to version 3.3.9 or 4.25.0 eliminates this vulnerability. Productinfo Vendor OWASP Name coreruleset Version 3.3.0 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 3.3.7 3.3.8 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.7 VulDB Meta Temp Score: 3.6 VulDB Base Score: 3.7 VulDB Temp Score: 3.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Case sensitivity CWE: CWE-178 / CWE-697 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: coreruleset 3.3.9/4.25.0 Timelineinfo 03/30/2026 Advisory disclosed 03/30/2026 +0 days VulDB entry created 03/30/2026 +0 days VulDB entry last update Sourcesinfo Advisory: seclists.org Status: Confirmed Confirmation: 🔒 CVE: CVE-2026-33691 (🔒) GCVE (CVE): GCVE-0-2026-33691 GCVE (VulDB): GCVE-100-354142 Entryinfo Created: 03/30/2026 07:33 Changes: 03/30/2026 07:33 (53) Complete: 🔍 Cache ID: 99:19B:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸