by Kastro
Paper/Archive/CVE-2026-63647

CVE-2026-63647

1Panel-dev CordysCRM — CordysCRM SSE Notification Stream Hijack via `/sse/subscribe`

EPSS 0.5%public exploitCVSS 9.3
critical.is priorityof 100
46
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 42.6.426 × 208.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
CordysCRM< 1.7.2–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/1Panel-dev/CordysCRM/security/advisories/GHSA-9qg8-cm35-xqp4refgithub.com/1Panel-dev/CordysCRM/pull/2719refgithub.com/1Panel-dev/CordysCRM/commit/6cb81deb53434ae7792673c50312ff91685d7f9drefgithub.com/1Panel-dev/CordysCRM/releases/tag/v1.7.2