CVE-2026-90799

Low

Description

Unsafe binary deserialisation in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows an authenticated user to cause a denial of service via memory exhaustion. Users are recommended to upgrade to version 3.5.3, which fixes this issue.

SeverityLow

CVSS1.3

Exploit probability—

ProductApache CouchDB

PublishedOct 20, 2026

First seenOct 20, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Update

Apache Software Foundation Apache CouchDB3.5.3 or later

Vendor advisories

lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f
lists.apache.org/thread/bqxkm19hw8985t7opz675b29hs1zl4z9

Affected products

Product	Affected versions	Fixed in
Apache Software Foundation Apache CouchDB	v < 3.5.3	3.5.3

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