Vulnerability-Lookup

GHSA-9664-6254-G54F

Vulnerability from github – Published: 2026-09-14 15:32 – Updated: 2026-09-14 21:31

Details

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope.

An administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body. These values can be then used to perform further REST requests, impersonating users with higher administration entitlements.

This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.

Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-73178"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-14T13:18:45Z",
    "severity": "HIGH"
  },
  "details": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope.\n\nAn administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body.\nThese values can be then used to perform further REST requests, impersonating users with higher administration entitlements.\n\n\n\n\n\nThis issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.\n\nUsers are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.",
  "id": "GHSA-9664-6254-g54f",
  "modified": "2026-09-14T21:31:36Z",
  "published": "2026-09-14T15:32:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73178"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/owcdm0stb39mnkpyps0h6yw4gp2olnkj"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/14/4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-73178 (GCVE-0-2026-73178)

Vulnerability from cvelistv5 – Published: 2026-09-14 13:06 – Updated: 2026-09-14 19:29

Title

Apache Syncope: JWT Access Token takeover

Summary

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope. An administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body. These values can be then used to perform further REST requests, impersonating users with higher administration entitlements. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2. Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-14 19:29 UTC

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

apache mitre root

References

2 references

URL	Tags
https://lists.apache.org/thread/owcdm0stb39mnkpyp…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/09/14/4

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Syncope	Affected: 3.0.0-M0 , ≤ 3.0.16 (semver) Affected: 4.0.0-M0 , ≤ 4.0.7 (semver) Affected: 4.1.0-M0 , ≤ 4.1.2 (semver)

Credits

n0mi1k

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-09-14T18:08:59.042Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/09/14/4"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-73178",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-14T19:29:30.325595Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-14T19:29:51.690Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.syncope.core:syncope-core-provisioning-java",
          "product": "Apache Syncope",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "3.0.16",
              "status": "affected",
              "version": "3.0.0-M0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.0.7",
              "status": "affected",
              "version": "4.0.0-M0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.1.2",
              "status": "affected",
              "version": "4.1.0-M0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "n0mi1k"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eExposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope.\u003cbr\u003e\u003cbr\u003eAn administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body.\u003cbr\u003eThese values can be then used to perform further REST requests, impersonating users with higher administration entitlements.\u003c/p\u003e\u003cp\u003e\u003c/p\u003eThis issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.\u003cp\u003e\u003c/p\u003e"
            }
          ],
          "value": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope.\n\nAn administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body.\nThese values can be then used to perform further REST requests, impersonating users with higher administration entitlements.\n\n\n\n\n\nThis issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.\n\nUsers are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "important"
            },
            "type": "Textual description of severity"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T13:06:19.901Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread/owcdm0stb39mnkpyps0h6yw4gp2olnkj"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Apache Syncope: JWT Access Token takeover",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-73178",
    "datePublished": "2026-09-14T13:06:19.901Z",
    "dateReserved": "2026-08-11T10:15:37.051Z",
    "dateUpdated": "2026-09-14T19:29:51.690Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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

GHSA-9664-6254-G54F

CVE-2026-73178 (GCVE-0-2026-73178)

Tags

Sightings

Nomenclature

Related by attack behaviour