Vulnerability-Lookup

CVE-2026-73098 (GCVE-0-2026-73098)

Vulnerability from cvelistv5 – Published: 2026-11-05 11:49 – Updated: 2026-11-05 19:04

Title

Apache Juneau: Unsafe reflection allows attacker-controlled class initialization during parsing

Summary

Improper control of dynamically-loaded code vulnerability in Apache Juneau. When Apache Juneau parses a value into a property of type java.lang.Class (including parameterized forms), the default class swap loaded the named class with initialization enabled, so input naming a class on the application classpath ran that class's static initializer. The impact depends on the classes present in the deployment. This issue affects Apache Juneau: through 9.2.0. Users are recommended to upgrade to version 9.2.1, which fixes the issue.

Severity

10 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-05 16:58 UTC

CWE

CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1178 records in the last 180 days details

References

1 reference

URL	Tags
https://lists.apache.org/thread.html/j05q7vw08j48…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache Juneau	Affected: 0 , < 9.2.1 (semver)	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-73098

Vulnerability from fkie_nvd - Published: 2026-11-05 12:17 - Updated: 2026-11-05 19:17

Severity

10.0 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread.html/j05q7vw08j48o96tdlzcsd4sozx1lyl6

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-59FG-F5XC-XJG9

Vulnerability from github – Published: 2026-11-05 12:32 – Updated: 2026-11-05 12:32

Details

Improper control of dynamically-loaded code vulnerability in Apache Juneau.

When Apache Juneau parses a value into a property of type java.lang.Class (including parameterized forms), the default class swap loaded the named class with initialization enabled, so input naming a class on the application classpath ran that class's static initializer. The impact depends on the classes present in the deployment.

This issue affects Apache Juneau: through 9.2.0.

Users are recommended to upgrade to version 9.2.1, which fixes the issue.

Severity

10.0 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Show details on source website

JSON

To clipboard

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    "severity": "CRITICAL"
  },
  "details": "Improper control of dynamically-loaded code vulnerability in Apache Juneau.\n\nWhen Apache Juneau parses a value into a property of type java.lang.Class (including parameterized forms), the default class swap loaded the named class with initialization enabled, so input naming a class on the application classpath ran that class\u0027s static initializer. The impact depends on the classes present in the deployment.\n\nThis issue affects Apache Juneau: through 9.2.0.\n\nUsers are recommended to upgrade to version 9.2.1, which fixes the issue.",
  "id": "GHSA-59fg-f5xc-xjg9",
  "modified": "2026-11-05T12:32:14Z",
  "published": "2026-11-05T12:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73098"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/j05q7vw08j48o96tdlzcsd4sozx1lyl6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

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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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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-73098 (GCVE-0-2026-73098)

FKIE_CVE-2026-73098

GHSA-59FG-F5XC-XJG9

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