Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N L L L 2.1 .0029 21.7 —
AFFECTED
Product Versions Fixed
AstrBot 4.25.0 – —
TIMELINE
Jul 17 Reserved by VulDB
Jul 18 EXPLOIT PUBLISHED — CVE-2026-16076 (AstrBotDevs AstrBot). Public exploit reference added.
Jul 18 Published (CNA: VulDB)
Jul 20 RESCORED — CVE-2026-16076 (AstrBotDevs AstrBot). CVSS 5.3 → 2.1 (NVD).
Description
A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5. This issue affects the function OpenApiRoute.chat_send of the file astrbot/dashboard/routes/open_api.py of the component API. Such manipulation of the argument Username leads to authentication bypass by spoofing. It is possible to launch the attack remotely. 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.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| July 17, 2026 | Reserved | Reserved by VulDB |
| July 18, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-16076 (AstrBotDevs AstrBot). Public exploit reference added. |
| July 18, 2026 | Published | Published (CNA: VulDB) |
| July 20, 2026 | RESCORED | RESCORED — CVE-2026-16076 (AstrBotDevs AstrBot). CVSS 5.3 → 2.1 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| AstrBotDevs | AstrBot | — | 4.25.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16076 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.