CVE-2026-41242 | protobufjs protobuf.js up to 7.5.4/8.0.0 Type code injection (GHSA-xq3m-2v4x-88gg / EUVD-2026-23678)

VDB-358208 · CVE-2026-41242 · GHSA-XQ3M-2V4X-88GG PROTOBUFJS PROTOBUF.JS UP TO 7.5.4/8.0.0 TYPE CODE INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $0-$5k 10.00 Summaryinfo A vulnerability was found in protobufjs protobuf.js up to 7.5.4/8.0.0 and classified as critical. This issue affects some unknown processing. Such manipulation of the argument Type leads to code injection. This vulnerability is listed as CVE-2026-41242. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component. Detailsinfo A vulnerability was found in protobufjs protobuf.js up to 7.5.4/8.0.0. It has been rated as critical. Affected by this issue is an unknown code. The manipulation of the argument type with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes: protobufjs compiles protobuf definitions into JavaScript (JS) functions. In versions prior to 8.0.1 and 7.5.5, attackers can inject arbitrary code in the "type" fields of protobuf definitions, which will then execute during object decoding using that definition. Versions 8.0.1 and 7.5.5 patch the issue. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-41242 since 04/18/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059. Upgrading to version 7.5.5 or 8.0.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 535df444ac060243722ac5d672db205e5c531d75 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-23678). Productinfo Type JavaScript Library Vendor protobufjs Name protobuf.js Version 7.5.0 7.5.1 7.5.2 7.5.3 7.5.4 8.0 License open-source Website Product: https://github.com/protobufjs/protobuf.js/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 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: Code injection CWE: CWE-94 / CWE-74 / CWE-707 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: protobuf.js 7.5.5/8.0.1 Patch: 535df444ac060243722ac5d672db205e5c531d75 Timelineinfo 04/18/2026 Advisory disclosed 04/18/2026 +0 days CVE reserved 04/18/2026 +0 days VulDB entry created 04/18/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-xq3m-2v4x-88gg Status: Confirmed CVE: CVE-2026-41242 (🔒) GCVE (CVE): GCVE-0-2026-41242 GCVE (VulDB): GCVE-100-358208 EUVD: 🔒 Entryinfo Created: 04/18/2026 22:03 Updated: 04/18/2026 22:37 Changes: 04/18/2026 22:03 (72), 04/18/2026 22:37 (1) Complete: 🔍 Cache ID: 99:2F9:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸