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CVE-2026-16076

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 PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b233355cb9312a0530514a2f939cff159377c36d1672d5ccf5231977d16fc198
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-290","description":"Authentication Bypass by Spoofing","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-287","description":"Improper Authentication","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:astrbot:astrbot:*:*:*:*:*:*:*:*"],"modules":["API"],"product":"AstrBot","vendor":"AstrBotDevs","versions":[{"status":"affected","version":"4.25.0"},{"status":"affected","version":"4.25.1"},{"status":"affected","version":"4.25.2"},{"status":"affected","version":"4.25.3"},{"status":"affected","version":"4.25.4"},{"status":"affected","version":"4.25.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-290","description":"Authentication Bypass by Spoofing","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-287","description":"Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/problemTypes/1/descriptions/0

Source references

5 source assertions
{"tags":["exploit"],"url":"https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/references/4
{"name":"CVE-2026-16076 | CVE Analysis and Report","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-16076"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/references/2
{"name":"Submit #852864 | AstrBotDevs AstrBot <= 4.25.5 Authentication Bypass by Spoofing (CWE-290)","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/852864"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/references/3
{"name":"VDB-379791 | AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/379791"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/references/0
{"name":"VDB-379791 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/379791/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8ab748019891e3e492a6e81e898784023a70e3d99e1428de1ec4dd78785aacd6 · sha256:a428ef7b44ec513f… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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