CVE-2026-4957 | OpenBMB XAgent 1.0.0 API Key function_handler.py FunctionHandler.handle_tool_call api_key log file

VDB-353834 · CVE-2026-4957 · GCVE-100-353834 OPENBMB XAGENT 1.0.0 API KEY FUNCTION_HANDLER.PY FUNCTIONHANDLER.HANDLE_TOOL_CALL API_KEY LOG FILE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 2.5 $0-$5k 1.74 Summaryinfo A vulnerability described as problematic has been identified in OpenBMB XAgent 1.0.0. This affects the function FunctionHandler.handle_tool_call of the file XAgent/function_handler.py of the component API Key Handler. Such manipulation of the argument api_key leads to log file. This vulnerability is traded as CVE-2026-4957. The attack may be launched remotely. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability was found in OpenBMB XAgent 1.0.0. It has been rated as problematic. Affected by this issue is the function FunctionHandler.handle_tool_call of the file XAgent/function_handler.py of the component API Key Handler. The manipulation of the argument api_key with an unknown input leads to a log file vulnerability. Using CWE to declare the problem leads to CWE-532. Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information. Impacted is confidentiality. The advisory is available at gist.github.com. This vulnerability is handled as CVE-2026-4957. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. Technical details as well as a public exploit are known. This vulnerability is assigned to T1592 by the MITRE ATT&CK project. The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor OpenBMB Name XAgent Version 1.0.0 CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 2.7 VulDB Meta Temp Score: 2.5 VulDB Base Score: 2.7 VulDB Temp Score: 2.5 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: Log file CWE: CWE-532 / CWE-200 / CWE-284 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes 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: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/27/2026 Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Advisory: gist.github.com Status: Not defined CVE: CVE-2026-4957 (🔒) GCVE (CVE): GCVE-0-2026-4957 GCVE (VulDB): GCVE-100-353834 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/27/2026 09:13 Changes: 03/27/2026 09:13 (58) Complete: 🔍 Submitter: Eric-z Cache ID: 99:3E3:101 Submitinfo Accepted Submit #777615: OpenBMB XAgent v1.0.0 CWE-532 (by Eric-z) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸