CVE-2026-72548— OpenSignLabs OpenSign - Information Disclosure
Possible ATT&CK Techniques 1AI
T1135 · Network Share DiscoveryAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| OpenSignLabs | OpenSign | ≤ 2.37.0 | affected |
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I. Basic Information for CVE-2026-72548
Vulnerability Information
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Vulnerability Title
OpenSignLabs OpenSign - Information Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any organisation tenant record via the gettenant Parse cloud function. The function accepts a contactId parameter and returns the full tenant record without authentication or authorization checks. An attacker can enumerate and disclose tenant configuration data for any organisation in the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSignLabs OpenSign 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSignLabs OpenSign是OpenSignLabs组织的一款数字文档签名解决方案。 OpenSignLabs OpenSign 2.37.0及之前版本存在信息泄露漏洞，该漏洞源于gettenant Parse cloud function接受contactId参数时未进行身份验证或授权检查，可能导致未经身份验证的远程攻击者检索任意组织租户记录，泄露租户配置数据。
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 |
|---|---|---|---|---|
| OpenSignLabs | OpenSign | 0 ~ 2.37.0 | - |
II. Public POCs for CVE-2026-72548
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 9616 chars
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III. Intelligence Information for CVE-2026-72548
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Vendor Pages for CVE-2026-72548 (1)
Same Patch Batch · OpenSignLabs · 2026-08-11 · 5 CVEs total
| CVE-2026-72545 | 7.5 HIGH | OpenSignLabs OpenSign - Insecure Direct Object Reference |
| CVE-2026-72543 | 7.5 HIGH | OpenSignLabs OpenSign - Insecure Direct Object Reference |
| CVE-2026-72544 | 7.5 HIGH | OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity |
| CVE-2026-72549 | 5.3 MEDIUM | OpenSignLabs OpenSign - Information Disclosure |
IV. Related Vulnerabilities
Same vendor: OpenSignLabs
- CVE-2026-72549
OpenSignLabs OpenSign - Information Disclosure - CVE-2026-72545
OpenSignLabs OpenSign - Insecure Direct Object Reference - CVE-2026-72544
OpenSignLabs OpenSign - Insufficient Verification of Data Au - CVE-2026-72543
OpenSignLabs OpenSign - Insecure Direct Object Reference - CVE-2026-72692
OpenSignLabs opensignserver - Missing Authorization
Same weakness: CWE-200
- CVE-2026-75587
Plaintext pre-auth secret exposure via Desktop App diagnosti - CVE-2026-71424
Onyx: Cross-user OAuth-token leak via /api/mcp/servers* for - CVE-2026-57485
Stirling-PDF: Internal Service Account API Key Disclosure vi - CVE-2026-68520
Glances: as_dict_secure() Value-Level Bypass Leaks Credentia - CVE-2026-64859
New API: User List API Leaks Root User Access Token Leading
V. Comments for CVE-2026-72548
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