Low severity · published Oct 20, 2026
CVE-2026-90799
Apache CouchDB: Atom-table exhaustion in _changes sequences and _search bookmarks with specially crafted sequence values
1.3
CVSS
0.6%
EPSS
No
On KEV
Description
Unsafe binary deserialisation in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows an authenticated user to cause a denial of service via memory exhaustion.
Users are recommended to upgrade to version 3.5.3, which fixes this issue.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Apache CouchDB · Apache Software Foundation
before 3.5.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90799
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90799
lists.apache.org
https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f
lists.apache.org
https://lists.apache.org/thread/bqxkm19hw8985t7opz675b29hs1zl4z9
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/10/20/14
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