Skip to main content
Press slash or control plus K to focus the search. Use the arrow keys to navigate results and press enter to open a threat.
Reconnecting to live updates…
EPSS 0.4%top 69%

CVE-2026-4958: Authorization Bypass in OpenBMB XAgent

0
Low
VulnerabilityCVE-2026-4958cvecve-2026-4958
Published: 03/27/2026 (03/27/2026, 15:31:27 UTC)
Source: CVE Database V5
Vendor/Project: OpenBMB
Product: XAgent

Description

A vulnerability has been found in OpenBMB XAgent 1.0.0. This affects the function ReplayServer.on_connect/ReplayServer.send_data of the file XAgentServer/application/websockets/replayer.py of the component WebSocket Endpoint. Such manipulation of the argument interaction_id leads to authorization bypass. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is reported as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v4.0

Score 2.3low

Attack Vector
Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
None
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Affected software

GitHub Actionsmore threats →ai
openbmb/XAgent
pkg:github/openbmb/XAgent
Affected versions
=1.0.0

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/04/2026, 11:07:13 UTC

Technical Analysis

This vulnerability in OpenBMB XAgent 1.0.0 allows an attacker to bypass authorization controls by manipulating the interaction_id parameter in the ReplayServer's WebSocket endpoint functions on_connect and send_data. The flaw resides in the component XAgentServer/application/websockets/replayer.py. Exploitation requires remote access and is rated as highly complex and difficult. Although the exploit has been publicly disclosed, there are no known exploits in the wild and the vendor has not issued a fix or advisory.

Potential Impact

Successful exploitation results in an authorization bypass, potentially allowing an attacker with limited privileges to perform actions or access data beyond their authorization scope. The impact is considered low severity due to the high complexity of exploitation and limited privileges required. There is no indication of privilege escalation, data integrity loss, or availability impact.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no patch or workaround is available, users should monitor for updates from the vendor. Due to the complexity of exploitation and low severity, immediate emergency response is not indicated but caution is advised.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-03-27T08:07:54.929Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 69c6a9723c064ed76fbf9385

Added to database: 03/27/2026, 15:59:46 UTC

Last enriched: 04/04/2026, 11:07:13 UTC

Last updated: 07/31/2026, 19:22:59 UTC

Views: 135

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses