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TI-2026-76886 Aliases CVE-2026-90799GHSA-cxg8-w7xq-jwgf

Unsafe deserialization in Apache CouchDB lets users exhaust memory

Priority LOW 9CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Apache CouchDB 3.5.2 and below on all platforms contains unsafe binary deserialization in chttpd (CWE-502). An authenticated user with low privileges can send crafted data over the network to exhaust server memory and cause a denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00644 51st percentileScored 2026-11-07
Fix Fixed Apache CouchDB (Apache Software Foundation): 3.5.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache CouchDBbefore 3.5.33.5.3Patch availableCNA
  • Apache CouchDB VendorApache Affected before 3.5.3 Fixed in 3.5.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:apache:couchdb:*:*:*:*:*:*:*:*——Apache
  • cpe:2.3:a:apache:couchdb:*:*:*:*:*:*:*:* Versions — — ·Apache

Remediation

Upgrade Apache CouchDB to 3.5.3, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Apache CouchDB (Apache Software Foundation) Fixed in 3.5.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache CouchDB 3.5.3

    6 records Highest priority Priority MEDIUM 2 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-76883 Unvalidated setting in Apache CouchDB allows OS command executionPriority MEDIUM 43
    • TI-2026-76884 Pre-authentication gzip decompression bomb in Apache CouchDBPriority MEDIUM 41
    • TI-2026-76887 Missing authorization in Apache CouchDB exposes prefixed system databasesPriority LOW 38
    Show all 6 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-90799
  2. 2026-10-20 Weakness changed · CISA ADP
  3. 2026-10-20 CISA SSVC decision points changed
  4. 2026-10-21 Alias added: GHSA-cxg8-w7xq-jwgf

References

Advisory 1

Other 1

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
See all 4053 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences