Vulnerability-Lookup

GHSA-P3JW-Q4JG-X8W9

Vulnerability from github – Published: 2026-07-27 09:31 – Updated: 2026-07-27 09:31

Details

Leantime 3.6.2 and prior contains a broken access control vulnerability that allows authenticated users to read milestone data from projects they are not assigned to by supplying arbitrary integer milestone IDs to the tickets.getMilestone JSON-RPC endpoint. Attackers can enumerate integer milestone IDs through the JSON-RPC API to access project planning information, milestone titles, descriptions, and timelines across all projects on the instance regardless of project membership.

Severity

6.5 (Medium)


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

7.1 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-66412"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-27T07:16:30Z",
    "severity": "HIGH"
  },
  "details": "Leantime 3.6.2 and prior contains a broken access control vulnerability that allows authenticated users to read milestone data from projects they are not assigned to by supplying arbitrary integer milestone IDs to the tickets.getMilestone JSON-RPC endpoint. Attackers can enumerate integer milestone IDs through the JSON-RPC API to access project planning information, milestone titles, descriptions, and timelines across all projects on the instance regardless of project membership.",
  "id": "GHSA-p3jw-q4jg-x8w9",
  "modified": "2026-07-27T09:31:26Z",
  "published": "2026-07-27T09:31:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Leantime/leantime/security/advisories/GHSA-wv69-xr82-phr6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66412"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Leantime/leantime/pull/3657"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Leantime/leantime/commit/68898eeb914882a21797523f2782914795bc67ae"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/leantime-all-versions-prior-to-and-broken-access-control-via-tickets-getmilestone-json-rpc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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"
    }
  ]
}

CVE-2026-66412 (GCVE-0-2026-66412)

Vulnerability from cvelistv5 – Published: 2026-07-27 05:23 – Updated: 2026-07-28 01:06

Title

Leantime all versions prior to and 3.6.2 Broken Access Control via tickets.getMilestone JSON-RPC

Summary

Severity

7.1 (High)


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

6.5 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

VulnCheck

References

4 references

URL	Tags
https://github.com/Leantime/leantime/security/adv…	vendor-advisory
https://github.com/Leantime/leantime/pull/3657	issue-tracking
https://github.com/Leantime/leantime/commit/68898…	patch
https://www.vulncheck.com/advisories/leantime-all…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Leantime	Leantime	Affected: 0 , ≤ 3.6.2 (semver)

Date Public

2026-07-27 00:00

Credits

Javokhir Tursunboyev (@javokhir-sec)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-66412",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-27T18:05:16.983179Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-27T18:06:08.039Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/Leantime/leantime/pull/3657"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Leantime",
          "vendor": "Leantime",
          "versions": [
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              "lessThanOrEqual": "3.6.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
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      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
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        }
      ],
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    "datePublished": "2026-07-27T05:23:20.773Z",
    "dateReserved": "2026-07-27T05:16:45.792Z",
    "dateUpdated": "2026-07-28T01:06:35.536Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

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.

Action not permitted

GHSA-P3JW-Q4JG-X8W9

CVE-2026-66412 (GCVE-0-2026-66412)

Tags

Sightings

Nomenclature