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CVE-2025-52490: An issue was discovered in Couchbase Sync Gateway before 3.2.6

33
Routine
HIGH 7.3REMOTEUPGRADE

CVE-2025-52490 is a high-severity flaw (CVSS 7.3) affecting sync gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Couchbase Sync Gateway before 3.2.6. In sgcollect_info_options.log and sync_gateway.log, there are cleartext passwords in redacted and unredacted output.

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score7.3 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.2% (top 90%)
CISA exploited listNo
WeaknessCWE-319
Published2025-07-29
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: couchbase

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

couchbase sync gateway UPGRADE
Affected: < 3.2.6
Fixed in: 3.2.6
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy sync-gateway || rpm -q sync-gateway || sync-gateway --version
2. UPGRADE to 3.2.6 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade sync-gateway
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade sync-gateway
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-52490?

sync gateway: upgrade to 3.2.6. Exact commands for each OS are on this page.

Is CVE-2025-52490 being exploited?

CVE-2025-52490 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-52490 affect?

CVE-2025-52490 affects sync gateway. Severity is high (CVSS 7.3). An issue was discovered in Couchbase Sync Gateway before 3.2.6. In sgcollect_info_options.log and sync_gateway.log, there are cleartext passwords in redacted and unredacted output.

How urgent is CVE-2025-52490?

Priority 33/100. High severity; Remotely exploitable, no login, no user action

References

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