CVE-2026-126807

EUVD-2026-124022
WuzAPI through 1.1.0 contains a cross-tenant information disclosure vulnerability in the GetHistory handler that allows authenticated users to view other tenants' chat metadata. Attackers with message history enabled can request GET /chat/history with chat_jid=index to list every user's internal ID, stored chat JIDs, and last-message times.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/asternic/wuzapi/blob/v1.1.0/handlers.go#L7269-L7296
https://github.com/asternic/wuzapi/blob/v1.1.0/routes.go#L139
https://github.com/asternic/wuzapi/commit/f5332fa21b7c8a742f9ee565328ea776ad0c8040
https://github.com/asternic/wuzapi/issues/407
https://hackmd.io/@hieund/wuzapi-chat-history-index-cross-tenant-idor
https://www.vulncheck.com/advisories/wuzapi-through-1.1.0-cross-tenant-information-disclosure-via-chat-history