CVE-2026-80207

CVE-2026-80207

APITable through 1.13.0-beta.1 annotates the create handler of InternalNotifyController with requiredLogin = false. ResourceInterceptor honours that annotation by returning before any session or API key is validated, and the nginx gateway shipped with the product proxies every /api request to the backend server, so POST /api/v1/internal/notification/create is reachable by any unauthenticated client that can reach the gateway. An attacker can persist arbitrary notifications in apitable_player_notification against any user ID they name, and because fromUserId can be set to 0 the message is stored with the system sender and renders in the victim's inbox as a legitimate system notification. The body extras content is stored verbatim and forwarded to the frontend.

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-80207?
CVE-2026-80207 is a medium-severity vulnerability, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-08-27.
How severe is CVE-2026-80207?
Medium severity. CVSS v3 base score is 5.3 out of 10.