Vulnerability-Lookup

CVE-2026-42797 (GCVE-0-2026-42797)

Vulnerability from cvelistv5 – Published: 2026-05-25 15:00 – Updated: 2026-05-26 20:06

Title

Apache Syncope: JexlContextBuilder Information Disclosure

Summary

Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope. An administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which allows any administrator with sufficient entitlements for User read to access User-related security-sensitive information. This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0. Users are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by further restricting the JEXL expression definition.

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-26 20:06 UTC

CWE

CWE-202 - Exposure of Sensitive Information Through Data Queries

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1197 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/5y7d277sntyytrmxn…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/05/25/5

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache Syncope	Affected: 3.0 , ≤ 3.0.16 (semver) Affected: 4.0 , ≤ 4.0.5 (semver) Affected: 4.1 , ≤ 4.1.0 (semver)	guessed

Credits

elin kai

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-42797

Vulnerability from fkie_nvd - Published: 2026-05-25 16:16 - Updated: 2026-07-24 10:10

Severity

4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6	Mailing List, Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/05/25/5	Mailing List, Third Party Advisory

Impacted products

Vendor	Product	Version
apache	syncope	*
apache	syncope	*
apache	syncope	4.1.0

JSON

To clipboard

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      "value": "Exposici\u00f3n de Informaci\u00f3n Sensible A Trav\u00e9s de Consultas de Datos vulnerabilidad en Apache Syncope.\n\nUn administrador con permisos adecuados para Esquemas Derivados puede crear una expresi\u00f3n JEXL maliciosa que permite a cualquier administrador con permisos suficientes para lectura de Usuario acceder a informaci\u00f3n sensible para la seguridad relacionada con el Usuario.\n\nEste problema afecta a Apache Syncope: 3.0 hasta 3.0.16, 4.0 hasta 4.0.5, 4.1.0.\n\nSe recomienda a los usuarios actualizar a la versi\u00f3n 4.0.6 / 4.1.1, que solucionan este problema al restringir a\u00fan m\u00e1s la definici\u00f3n de la expresi\u00f3n JEXL."
    }
  ],
  "id": "CVE-2026-42797",
  "lastModified": "2026-07-24T10:10:00.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-42797",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-26T20:06:27.934895Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-25T16:16:20.390",
  "references": [
    {
      "source": "security@apache.org",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "url": "https://lists.apache.org/thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/05/25/5"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-202"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

GHSA-VR35-JM2F-8WG2

Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-06-30 17:19

Summary

Apache Syncope Vulnerable to Exposure of Sensitive Information Through Data Queries

Details

Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope.

An administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which allows any administrator with sufficient entitlements for User read to access User-related security-sensitive information.

This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0.

Users are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by further restricting the JEXL expression definition.

Severity

4.9 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.syncope.core:syncope-core-provisioning-api"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0-M0"
            },
            {
              "last_affected": "3.0.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.syncope.core:syncope-core-provisioning-api"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0-M0"
            },
            {
              "fixed": "4.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.syncope.core:syncope-core-provisioning-api"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.1.0-M0"
            },
            {
              "fixed": "4.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42797"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-202"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-30T17:19:28Z",
    "nvd_published_at": "2026-05-25T16:16:20Z",
    "severity": "MODERATE"
  },
  "details": "Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope.\n\nAn administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which allows any administrator with sufficient entitlements for User read to access User-related security-sensitive information.\n\nThis issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0.\n\nUsers are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by further restricting the JEXL expression definition.",
  "id": "GHSA-vr35-jm2f-8wg2",
  "modified": "2026-06-30T17:19:28Z",
  "published": "2026-05-26T13:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42797"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/syncope"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/25/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Syncope Vulnerable to Exposure of Sensitive Information Through Data Queries"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-42797 (GCVE-0-2026-42797)

FKIE_CVE-2026-42797

GHSA-VR35-JM2F-8WG2

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