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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-86463

Apache CXF: FIQL Query Parser Denial of Service

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Status
Published
Published
Updated
Assigning organization
apache

Description

Apache CXF's FIQL query parser has a vulnerability in how it searches for operators in query expressions. The search pattern can get stuck trying many combinations when it encounters a long string without an operator, causing the parser to consume excessive CPU time. An attacker can send a crafted query to make the server use up CPU resources, potentially slowing down or stopping other requests. The fix was to limit FIQL expressions to 4 KiB by default, preventing attackers from sending extremely long inputs while still allowing normal queries. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache CXF

Default version status: unaffected

  • 4.2.0 to < 4.2.4affected
  • 4.0.0 to < 4.1.9affected
  • 0 to < 3.6.13affected
pkg:maven/org.apache.cxf/cxf-rt-rs-extension-search

References