Vulnerability Intelligence Report
Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session
CVE-2026-90797
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.
No Active Exploit Signals
CVSS Base Score
7.7
HIGH
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-409 ↗CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Apache Software Foundation | Apache CouchDB | 0 < 3.5.3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Apache Software Foundation · Vendor · USA |
| Reserved | 2026-09-13T15:01:20 |
| Published | 2026-10-20T15:39:23 |
| Last Updated | 2026-10-20T18:10:06 |
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