CVE-2021-27924 json
An issue was discovered in Couchbase Server 6.x through 6.6.1.
published 2021-05-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14644
- cvss
- 5.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
An issue was discovered in Couchbase Server 6.x through 6.6.1. The Couchbase Server UI is insecurely logging session cookies in the logs. This allows for the impersonation of a user if the log files are obtained by an attacker before a session cookie expires.
Patch / fix
- couchbase couchbase_server 6.6.2
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-319 Cleartext Transmission of Sensitive Information
References
-
couchbase.com
/resources/security#SecurityAlerts
vendor-advisory
-
couchbase.com
/downloads
product, vendor-advisory
Sources
- CVE List CVE-2021-27924
- NVD CVE-2021-27924
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.