CVE-2026-90797 PUBLISHED

Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session

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

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.

Metrics

CVSS 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/E:U/S:N/AU:Y/R:A/V:D/RE:M/U:Red
CVSS Score: 7.7

Product Status

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

Credits

  • ZeroVuln labs reporter

References