CVE-2026-33331 | middleapi orpc up to 1.13.8 Generated API Documentation cross site scripting

VDB-352866 · CVE-2026-33331 · GCVE-0-2026-33331 MIDDLEAPI ORPC UP TO 1.13.8 GENERATED API DOCUMENTATION CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.1 $0-$5k 3.57 Summaryinfo A vulnerability labeled as problematic has been found in middleapi orpc up to 1.13.8. This affects an unknown function of the component Generated API Documentation. The manipulation results in cross site scripting. This vulnerability is identified as CVE-2026-33331. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded. Detailsinfo A vulnerability, which was classified as problematic, was found in middleapi orpc up to 1.13.8. Affected is an unknown part of the component Generated API Documentation. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes: oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.9, a stored cross-site scripting (XSS) vulnerability exists in the OpenAPI documentation generation of orpc. If an attacker can control any field within the OpenAPI specification (such as info.description), they can break out of the JSON context and execute arbitrary JavaScript when a user views the generated API documentation. This issue has been patched in version 1.13.9. The advisory is available at github.com. This vulnerability is traded as CVE-2026-33331 since 03/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project. Upgrading to version 1.13.9 eliminates this vulnerability. Productinfo Vendor middleapi Name orpc Version 1.13.0 1.13.1 1.13.2 1.13.3 1.13.4 1.13.5 1.13.6 1.13.7 1.13.8 Website Product: https://github.com/middleapi/orpc/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.2 VulDB Meta Temp Score: 6.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.2 CNA Vector (GitHub_M): 🔒 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: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 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: orpc 1.13.9 Timelineinfo 03/18/2026 CVE reserved 03/24/2026 +6 days Advisory disclosed 03/24/2026 +0 days VulDB entry created 03/24/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-33331 (🔒) GCVE (CVE): GCVE-0-2026-33331 GCVE (VulDB): GCVE-100-352866 Entryinfo Created: 03/24/2026 21:00 Changes: 03/24/2026 21:00 (64) Complete: 🔍 Cache ID: 99:50A:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸