High severity · published Oct 26, 2026
CVE-2026-116818
OpenPanel before 3.0.0 Unauthenticated ClickHouse SQL Injection via /live/visitors WebSocket
New
8.2
CVSS
0.4%
EPSS
No
On KEV
Description
OpenPanel before 3.0.0 contains an unauthenticated ClickHouse sql injection vulnerability that allows remote attackers to inject SQL through the projectId parameter of the /live/visitors/:projectId WebSocket, which lacks session and project-access checks. Attackers can use UNION or boolean count oracles to read other tenants' events and profiles, and project members can similarly inject via the cohort.preview timeframe values.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openpanel · Openpanel-dev
before 3.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116818
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116818
github.com
https://github.com/Openpanel-dev/openpanel/commit/35ddc8ebbcd4ed0767933de61f014f153d68442a
github.com
https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-8wr9-x797-f238
www.vulncheck.com
https://www.vulncheck.com/advisories/openpanel-before-3.0.0-unauthenticated-clickhouse-sql-injection-via-live-visitors-websocket
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