EUVD-2026-33533
GHSA-r6vm-4xwg-w69h
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
A vulnerability was identified in AstrBotDevs AstrBot 4.24.2. This affects the function astr_main_agent of the file astrbot/core/astr_main_agent.py. Such manipulation of the argument session_id leads to authorization bypass. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
Authorization bypass in AstrBotDevs AstrBot 4.24.2 enables remote low-privilege authenticated attackers to manipulate the session_id argument within the astr_main_agent function to access or control sessions belonging to other users. The root cause is CWE-639 (Authorization Bypass Through User-Controlled Key), where the server fails to verify that the requesting user owns the supplied session_id. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVSS vector PR:L confirms that a low-privilege authenticated AstrBot account is required - unauthenticated exploitation is not indicated by available data. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L scores 6.3 Medium, reflecting network reachability, low complexity, and low-privilege authentication as the only barrier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A publicly available exploit exists as a GitHub gist authored by YLChen-007 (https://gist.github.com/YLChen-007/91a7f955143099e1747424707dfad0f9). An attacker with a low-privilege AstrBot account enumerates or guesses valid session_id values associated with other users - for example, by observing session identifiers exposed in API responses or through sequential probing - and submits a crafted request to the astr_main_agent function substituting a victim's session_id. … |
| Remediation | No vendor-released patch has been identified at time of analysis - the vendor did not respond to disclosure and no patched release version is available. … Detailed patch versions, workarounds, and compensating controls in full report. |
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