CVE-2026-90799 PUBLISHED

Apache CouchDB: Atom-table exhaustion in _changes sequences and _search bookmarks with specially crafted sequence values

Assigner: apache
Reserved: 13.09.2026 Published: 20.10.2026 Updated: 20.10.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:U/S:N/AU:Y/R:A/V:D/RE:M/U:Amber
CVSS Score: 1.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	Low
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Apache Software Foundation
Product	Apache CouchDB
Versions	Default: unaffected affected from 0 to 3.5.3 (excl.)

Credits

Piotr Karwasz & ZeroVuln Labs reported this issue independently finder

CVE-2026-90799 PUBLISHED

Apache CouchDB: Atom-table exhaustion in _changes sequences and _search bookmarks with specially crafted sequence values

Metrics

Product Status

Credits

References