CVE-2026-63647CWE-306CWE-639

CVE-2026-63647

published September 19, 2026

CVSS
9.3
EPSS
0%
Percentile
41.6
In the wild
Unconfirmed
What it is

CordysCRM is an open source AI-powered customer relationship management system that supports private deployment. Prior to 1.7.2, SseController exposes the anonymous /sse/subscribe, /sse/broadcast, and /sse/close endpoints because ShiroFilter.addPublicPathFilters permits the SSE paths, and the endpoints trust the caller-controlled userId instead of deriving an identity from an authenticated principal. An unauthenticated caller can use /sse/subscribe to read another user's workflow events, approval requests, mentions, and alerts, use /sse/broadcast to inject SYSTEM_HEARTBEAT messages into another user's stream, or use /sse/close to terminate another user's channel. This vulnerability is fixed in 1.7.2.

The record
Technical detail
CVSS
9.3 · NONE
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00496 · 41.6th percentile
Weaknesses
CWE-306 · Missing Authentication for Critical Function; CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-09-19T00:17Z
References (5)
EPSS history
Timeline
  • 20 SEP 03:23Z
    EPSS moved — → 0%
    epss
  • 18 SEP 19:53Z
    CordysCRM SSE Notification Stream Hijack via `/sse/subscribe`
    cvelistv5