Bug 2548456 (CVE-2026-86463) - CVE-2026-86463 org.apache.cxf/cxf-rt-rs-extension-search: Apache CXF: Denial of Service via crafted FIQL queries
Summary: CVE-2026-86463 org.apache.cxf/cxf-rt-rs-extension-search: Apache CXF: Denial ...
Keywords:
Status: NEW
Alias: CVE-2026-86463
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-09 10:31 UTC by OSIDB Bzimport
Modified: 2026-10-30 13:10 UTC (History)
16 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-09 10:31:32 UTC 
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.
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