Credential disclosure in Apache CouchDB replication endpoints
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
Insufficient filtering of credentials in the _replicator database in Apache CouchDB 3.5.2 and below lets an authenticated user read the replication credentials of other users' replications, including those of other users. An authenticated attacker with low privileges can obtain sensitive information from replications owned by other users.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Insufficient filtering of credentials in the _replicator database in Apache CouchDB 3.5.2 and below on all platforms allows an authenticated user to read replication credentials of other users’ replications, not just their own. Users are recommended to upgrade to version 3.5.3, which fixes this issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade Apache CouchDB to version 3.5.3, which fixes this issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Apache CouchDB (Apache Software Foundation) Fixed in 3.5.3
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache CouchDB 3.5.3
6 records Highest priority Priority MEDIUM 2 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2026-76883 Unvalidated setting in Apache CouchDB allows OS command executionPriority MEDIUM 43
- TI-2026-76884 Pre-authentication gzip decompression bomb in Apache CouchDBPriority MEDIUM 41
- TI-2026-76887 Missing authorization in Apache CouchDB exposes prefixed system databasesPriority LOW 38
Timeline
- 2026-10-20 Threatist record created from CVE-2026-107755
- 2026-10-20 Weakness changed · CISA ADP
- 2026-10-20 CISA SSVC decision points changed
- 2026-10-20 Priority changed: MEDIUM → LOW
- 2026-10-21 Alias added: GHSA-5433-3876-mmp4
References
More Apache vulnerabilities
- TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
- TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
- TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
- TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
- TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-107755 · CVE Program
- CVE-2026-107755 · NVD
- FIRST EPSS
- GHSA-5433-3876-mmp4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences