CVE-2026-78555 RansomLook API Key Disclosure Through /admin/apikeys HTML Source
Attackers can extract full API keys from HTML source, enabling unauthorized access to private data and administrative functions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78555?
CVE-2026-78555 is a critical vulnerability in ransomlook, published on 24 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-78555?
How do I fix CVE-2026-78555?
No fix has been published for CVE-2026-78555 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78555 being exploited?
There is no known exploitation of CVE-2026-78555 in the wild and no public exploit code.
Sources
Also known as GHSA-5vmw-j8f5-4j25.