Quick answers
- Is CVE-2026-90798 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-90798 being exploited in the wild.
- How severe is CVE-2026-90798?
- Informational severity, published 20 October 2026.
- Which products and versions are affected?
- Apache CouchDB 3.5.2 and below.
- Is there a fix for CVE-2026-90798?
- Yes: fixed in CouchDB 3.5.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-90798 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-90798?
- Check whether you run Apache CouchDB at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: CouchDB 3.5.3
Technical details
The replicator component in CouchDB lacks a circuit-breaker mechanism to detect and stop infinite HTTP redirect loops, allowing an attacker controlling a replication source or target to trigger a denial of service. This is a network-accessible vulnerability requiring the attacker to be the owner of one end of a replication pair. The fix is available in version 3.5.3.
Affected products
- Apache CouchDB 3.5.2 and below
Timeline
- 2026-10-20: disclosed