CVE-2026-82287 Rybbit Reflects Any Origin in CORS Responses While Allowing Credentials
Attackers can bypass CORS restrictions to read sensitive data and perform actions on behalf of authenticated users in Rybbit.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-82287?
CVE-2026-82287 is a high-severity vulnerability in rybbit-io rybbit, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Rybbit before 2.7.0 contains a CORS misconfiguration vulnerability that allows attackers to bypass origin restrictions by reflecting any request origin in Access-Control-Allow-Origin responses while credentials are enabled. Attackers can issue credentialed cross-origin requests from any website to read analytics data, account information, and perform authenticated state-changing operations as the victim user.
Weakness: CWE-942
Which versions are affected by CVE-2026-82287?
How do I fix CVE-2026-82287?
No fix has been published for CVE-2026-82287 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82287 being exploited?
There is no known exploitation of CVE-2026-82287 in the wild and no public exploit code.
Sources
Also known as GHSA-phf4-3733-pwc6.