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GHSA-PPM6-PRQ5-WV37

Vulnerability from github – Published: 2026-10-09 12:31 – Updated: 2026-10-09 12:31

Details

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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  "affected": [],
  "aliases": [
    "CVE-2026-86463"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-09T11:17:03Z",
    "severity": null
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  "details": "Apache CXF\u0027s 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.\n\nUsers are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.",
  "id": "GHSA-ppm6-prq5-wv37",
  "modified": "2026-10-09T12:31:44Z",
  "published": "2026-10-09T12:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86463"
    },
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      "url": "https://lists.apache.org/thread.html/mv5qfmd27gkbvt3k6by9db5bolrsbgy1"
    },
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}

CVE-2026-86463 (GCVE-0-2026-86463)

Vulnerability from cvelistv5 – Published: 2026-10-09 10:18 – Updated: 2026-10-09 11:08

Title

Apache CXF: FIQL Query Parser Denial of Service

Summary

Severity

No CVSS data available.

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 939 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread.html/mv5qfmd27gkb…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/09/8

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache CXF	Affected: 4.2.0 , < 4.2.4 (semver) Affected: 4.0.0 , < 4.1.9 (semver) Affected: 0 , < 3.6.13 (semver)

Credits

Mike Read (github.com/Michael-JRead)

Show details on NVD website

JSON

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Sightings

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Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-PPM6-PRQ5-WV37

CVE-2026-86463 (GCVE-0-2026-86463)

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