CVE-2021-42763

mediumpriority · track · 30OT risk · elevatedEPSS 0.006 · 49 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.61% (49th) EPSS

CVSS 5 · medium

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Couchbase Server before 6.6.3 and 7.x before 7.0.2 stores Sensitive Information in Cleartext. The issue occurs when the cluster manager forwards a HTTP request from the pluggable UI (query workbench etc) to the specific service. In the backtrace, the Basic Auth Header included in the HTTP request, has the "@" user credentials of the node processing the UI request.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-312USprimary

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
couchbase couchbase server< 4.6.0nvdUScpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:*
couchbase couchbase server5.0.0 → 6.1.0nvdUScpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:*
couchbase couchbase server6.5.0 → 6.6.2nvdUScpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:*
couchbase couchbase server= 7.0.0nvdUScpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:*
couchbase couchbase server= 7.0.1nvdUScpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-11-02modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

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