RansomLook API Key Disclosure Through /admin/apikeys HTML Source
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
RansomLook exposed complete API keys in the HTML source of the authenticated /admin/apikeys administration page. Although the interface displayed only a shortened representation of each key, the full token was embedded in hidden form fields used by the enable/disable, private-access, and delete actions. As a result, API credentials could be recovered by inspecting the page source or DOM. The credentials could also be unintentionally exposed through components that retain or inspect HTTP response bodies, such as debugging proxies, browser caches, monitoring systems, or other intermediaries. An attacker obtaining one of these tokens could subsequently authenticate using the privileges assigned to that key, including access to private data where the key was granted such permissions. The patch removes API keys from subsequent page rendering and replaces them with SHA-256-derived opaque handles. Administrative actions submit only these handles, which are resolved back to the corresponding token on the server. The full API key is therefore disclosed only once, when it is initially created.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ransomlook | ransomlook | up to 2.0.0 | — | No fix listed | CNA |
- ransomlook Vendorransomlook Affected up to 2.0.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-78555
- 2026-10-03 Alias added: GHSA-5vmw-j8f5-4j25
References
More ransomlook vulnerabilities
- TI-2026-54504 RansomLook Missing Authorization Allows Disclosure of Private Group and Ransom Note Data CVSS 4.0CRITICAL 9.2
- TI-2026-54503 RansomLook Unauthenticated Database Export Exposes Private Data CVSS 4.0CRITICAL 9.2
- TI-2026-54619 RansomLook Login Endpoint Allows Timing-Based Username Enumeration and Unthrottled Authentication Attempts CVSS 4.0HIGH 8.8
- TI-2026-54502 Missing Authentication Allows Unauthorized Creation of Crypto Groups in RansomLook CVSS 4.0HIGH 8.8
- TI-2026-54517 Stored Cross-Site Scripting via Untrusted Cryptocurrency Address Rendering in RansomLook CVSS 4.0HIGH 8.8
- TI-2026-54516 RansomLook Missing Authorization in Web Configuration Editor Allows Application Configuration Modification CVSS 4.0CRITICAL 9.4
Sources
- CVE-2026-78555 · CVE Program
- CVE-2026-78555 · NVD
- FIRST EPSS
- GHSA-5vmw-j8f5-4j25 · GitHub Advisory Database · CC BY 4.0
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