CVE-2026-90797

critical

Description

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.

References

https://lists.apache.org/thread/gsbotof0qn8x6zlpd7t568ny4053jo0n

https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105156

http://www.openwall.com/lists/oss-security/2026/10/20/12

Details

Source: Mitre, NVD

Published: 2026-10-20

Updated: 2026-10-20

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

CVSS v4

Base Score: 9.2

Vector: 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

Severity: Critical

EPSS

EPSS: 0.00669