Description
An issue was discovered in Couchbase Sync Gateway 2.7.0 through 2.8.2. The bucket credentials used to read and write data in Couchbase Server were insecurely being stored in the metadata within sync documents written to the bucket. Users with read access could use these credentials to obtain write access. (This issue does not affect clusters where Sync Gateway is authenticated with X.509 client certificates. This issue also does not affect clusters where shared bucket access is not enabled on Sync Gateway.)
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://www.couchbase.com/alerts
Scores
CVSS v3
8.1
EPSS
0.0050
EPSS Percentile
39.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-200
Status
published
Products (1)
couchbase/sync_gateway
2.7.0 - 2.8.3
Published
Dec 07, 2021
Tracked Since
Feb 18, 2026