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CVE-2026-54418— Leantime - Missing Authorization on TwoFA JSON-RPC Methods Allows Cross-Account 2FA Secret Disclosure and Bypass

Quick assessment

Affected
Leantime Leantime
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Leantime是Leantime公司开源的一款项目管理软件。 Leantime 3.6.2及之前版本存在授权问题漏洞，该漏洞源于JSON-RPC方法缺少所有权检查、会话固定或权限属性门控，可能导致已认证用户读取任意用户的TOTP密钥或禁用双因素认证。

CVSS 8.1 · High EPSS 0.35% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
Leantime Leantime ≤ 3.6.2 affected
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I. Basic Information for CVE-2026-54418

Vulnerability Information
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Vulnerability Title
Leantime - Missing Authorization on TwoFA JSON-RPC Methods Allows Cross-Account 2FA Secret Disclosure and Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Leantime through 3.6.2 exposes the JSON-RPC methods leantime.rpc.TwoFA.TwoFA.getSetupData, saveSecret, verifyAndEnable, and disable2FA, which act on a caller-supplied userId parameter with no ownership check, session pinning, or permission-attribute gate (unlike other RPC-exposed methods in the same dispatcher).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Leantime 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Leantime是Leantime公司开源的一款项目管理软件。 Leantime 3.6.2及之前版本存在授权问题漏洞，该漏洞源于JSON-RPC方法缺少所有权检查、会话固定或权限属性门控，可能导致已认证用户读取任意用户的TOTP密钥或禁用双因素认证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Leantime Leantime 0 ~ 3.6.2 -

II. Public POCs for CVE-2026-54418

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8036 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-54418

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Other References for CVE-2026-54418 (1)

IV. Related Vulnerabilities

Same product: Leantime
Same vendor: Leantime
Same weakness: CWE-862

V. Comments for CVE-2026-54418

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