Vulnerability-Lookup

CVE-2026-59712 (GCVE-0-2026-59712)

Vulnerability from cvelistv5 – Published: 2026-07-06 20:43 – Updated: 2026-07-28 17:46

Title

Leantime - JSON-RPC API Broken Access Control via users.getUser

Summary

Leantime's Users::getUser method in the JSON-RPC API lacks proper authorization checks, allowing authenticated users to retrieve full user credential rows including password hashes, TOTP secrets, and session tokens. Attackers can exploit this by calling users.getUser with arbitrary user IDs to enumerate all accounts and obtain credentials for offline password cracking, 2FA bypass, and session hijacking.

Severity

8.6 (High)


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

8.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-07 13:43 UTC

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

VulnCheck

References

4 references

URL	Tags
https://github.com/Leantime/leantime/issues/3556	issue-tracking
https://github.com/Leantime/leantime	product
https://github.com/Leantime/leantime/commit/4f261…	patch
https://www.vulncheck.com/advisories/leantime-cre…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Leantime	Leantime	Affected: 0 , ≤ 3.4.4 (semver)

Date Public

2026-06-20 00:00

Credits

George Chen Louis Sanchez of Voke Cyber

Show details on NVD website

JSON

To clipboard

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}

FKIE_CVE-2026-59712

Vulnerability from fkie_nvd - Published: 2026-07-06 21:16 - Updated: 2026-07-07 14:16

Severity

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

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/Leantime/leantime
	disclosure@vulncheck.com	https://github.com/Leantime/leantime/commit/4f2612d13e0e8a2093092a846b44506cf133b671
	disclosure@vulncheck.com	https://github.com/Leantime/leantime/issues/3556
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/leantime-credential-disclosure-via-unauthenticated-json-rpc-users-getuser-method

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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}

GHSA-HPHP-FMHR-5FQH

Vulnerability from github – Published: 2026-07-06 21:30 – Updated: 2026-07-06 21:30

Details

Severity

8.1 (High)


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

8.6 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-59712"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-06T21:16:58Z",
    "severity": "HIGH"
  },
  "details": "Leantime\u0027s Users::getUser method in the JSON-RPC API lacks proper authorization checks, allowing authenticated users to retrieve full user credential rows including password hashes, TOTP secrets, and session tokens. Attackers can exploit this by calling users.getUser with arbitrary user IDs to enumerate all accounts and obtain credentials for offline password cracking, 2FA bypass, and session hijacking.",
  "id": "GHSA-hphp-fmhr-5fqh",
  "modified": "2026-07-06T21:30:43Z",
  "published": "2026-07-06T21:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59712"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Leantime/leantime/issues/3556"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Leantime/leantime/commit/4f2612d13e0e8a2093092a846b44506cf133b671"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Leantime/leantime"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/leantime-credential-disclosure-via-unauthenticated-json-rpc-users-getuser-method"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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"
    }
  ]
}

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.

Action not permitted

CVE-2026-59712 (GCVE-0-2026-59712)

FKIE_CVE-2026-59712

GHSA-HPHP-FMHR-5FQH

Tags

Sightings

Nomenclature