CVE-2026-90797

EUVD-2026-105156
An unlimited gzip decompression routine in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any remote client to cause a denial of service via memory exhaustion.
Users are recommended to upgrade to version 3.5.3, which fixes this issue.
Data Amplification
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
7.7 HIGH
NETWORK
LOW
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/S:N/AU:Y/R:A/V:D/RE:M/U:Red
Base Score
CVSS 3.x
EPSS Score
Percentile: 51.31%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apachecouchdb
𝑥
< 3.5.3
CNA
Common Weakness Enumeration
References
https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f
https://lists.apache.org/thread/gsbotof0qn8x6zlpd7t568ny4053jo0n
http://www.openwall.com/lists/oss-security/2026/10/20/12