CVE-2026-4496 | sigmade Git-MCP-Server up to 785aa159f262a02d5791a5d8a8e13c507ac42880 src/gitUtils.ts child_process.exec os command injection

VDB-352045 · CVE-2026-4496 · GCVE-100-352045 SIGMADE GIT-MCP-SERVER UP TO 785AA159F262A02D5791A5D8A8E13C507AC42880 SRC/GITUTILS.TS CHILD_PROCESS.EXEC OS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.8 $0-$5k 2.19+ Summaryinfo A vulnerability, which was classified as critical, has been found in sigmade Git-MCP-Server up to 785aa159f262a02d5791a5d8a8e13c507ac42880. Affected by this issue is the function child_process.exec of the file src/gitUtils.ts of the component show_merge_diff/quick_merge_summary/show_file_diff. This manipulation causes os command injection. This vulnerability is registered as CVE-2026-4496. The attack needs to be launched locally. Furthermore, an exploit is available. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. Applying a patch is the recommended action to fix this issue. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability classified as critical was found in sigmade Git-MCP-Server up to 785aa159f262a02d5791a5d8a8e13c507ac42880. Affected by this vulnerability is the function child_process.exec of the file src/gitUtils.ts of the component show_merge_diff/quick_merge_summary/show_file_diff. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The advisory is shared at github.com. This vulnerability is known as CVE-2026-4496. The exploitation appears to be easy. An attack has to be approached locally. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue. It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. Productinfo Type Versioning Software Vendor sigmade Name Git-MCP-Server Version 785aa159f262a02d5791a5d8a8e13c507ac42880 Website Product: https://github.com/sigmade/Git-MCP-Server/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 4.8 VulDB Base Score: 5.3 VulDB Temp Score: 4.8 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: Os command injection CWE: CWE-78 / CWE-77 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 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: Patch Status: 🔍 0-Day Time: 🔒 Patch: github.com Timelineinfo 03/20/2026 Advisory disclosed 03/20/2026 +0 days VulDB entry created 03/20/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-4496 (🔒) GCVE (CVE): GCVE-0-2026-4496 GCVE (VulDB): GCVE-100-352045 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/20/2026 10:21 Changes: 03/20/2026 10:21 (61) Complete: 🔍 Submitter: Yinci Chen Cache ID: 99:5FC:101 Submitinfo Accepted Submit #773796: sigmade Git-MCP-Server <=1.0.0 Command Injection (by Yinci Chen) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸