Auth bypass in Astrbotdevs Astrbot
CVE-2026-16075
A flaw has been found in AstrBotDevs AstrBot up to 4.25.5. This vulnerability affects the function OpenApiRoute.get_chat_sessions of the file astrbot/dashboard/routes/open_api.py of the component session-listing Endpoint. This manipulation of the argument Username causes authorization bypass. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (29.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Astrbotdevs Astrbot — versions 4.25.0, 4.25.1, 4.25.2
Weakness classification (CWE)
References
- vuldb.com/vuln/379790 (technical-description, vdb-entry)
- vuldb.com/vuln/379790/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-16075 (third-party-advisory)
- vuldb.com/submit/852863 (third-party-advisory)
- gist.github.com/YLChen-007/5fee3adfd95333b0f4eff8165af61f81 (exploit)
Frequently asked questions
- What is CVE-2026-16075?
- CVE-2026-16075 is a medium-severity vulnerability in Astrbotdevs Astrbot, classified under Improper Authorization. CVSS score: 4.3/10. Published 2026-07-18.
- How severe is CVE-2026-16075?
- Medium severity. CVSS v3 base score is 4.3 out of 10.