Unsafe Binary Deserialization in Apache CouchDB
CVE-2026-90799

1.3LOW

Key Information:

Vendor

Apache
Status
Apache Couchdb
Vendor
CVE Published:
20 October 2026

What is CVE-2026-90799?

An unsafe binary deserialization vulnerability exists in Apache CouchDB versions 3.5.2 and earlier, which allows authenticated users to exploit this flaw. By leveraging this vulnerability, attackers can induce memory exhaustion, potentially leading to a denial of service. To mitigate this risk, it's essential for users to upgrade to CouchDB version 3.5.3, which addresses this issue effectively.

Affected Version(s)

Apache CouchDB 0 < 3.5.3

References

https://lists.apache.org/thread.html/pj83174r8f8f64odf47f...
release-notes
https://lists.apache.org/thread/bqxkm19hw8985t7opz675b29h...
vendor-advisory

CVSS V4

Score:
1.3
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Piotr Karwasz & ZeroVuln Labs reported this issue independently
.