CVE-2021-25643

MEDIUM

4.9

CVSS Score

Published: May 26, 2021 at 08:09 PM UTC

Updated: June 17, 2026 at 03:42 AM UTC

1 product affected across 1 vendorCouchbase Server

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Severity

MEDIUM4.9

Exploit prediction

EPSS 0.5%

Description

An issue was discovered in Couchbase Server 5.x and 6.x before 6.5.2 and 6.6.x before 6.6.2. Internal users with administrator privileges, @cbq-engine-cbauth and @index-cbauth, leak credentials in cleartext in the indexer.log file when they make a /listCreateTokens, /listRebalanceTokens, or /listMetadataTokens call.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Couchbase Server · Couchbase

95%

5.0.0 ≤ v < 6.5.26.6.0 ≤ v < 6.6.2

Affected range stops below 6.5.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.6.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.couchbase.com/resources/security#SecurityAlerts

References (1)

x_refsource_MISCx_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://www.couchbase.com/resources/security#SecurityAlerts

CVSS

4.9MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-319

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