CVE-2025-48980 Security feature bypass in Desktop Browser
Attackers can bypass SameSite cookie restrictions in Brave Browser's split view feature, potentially enabling cross-site request forgery or session hijacking.
- 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-2025-48980?
CVE-2025-48980 is a medium-severity vulnerability in Brave Desktop Browser, published on 30 Oct 2025. 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
In Brave Browser Desktop versions prior to 1.83.10 that have the split view feature enabled, the "Open Link in Split View" context menu item did not respect the SameSite cookie attribute. Therefore SameSite=Strict cookies would be sent on a cross-site navigation using this method.
Weakness: CWE-565
Which versions are affected by CVE-2025-48980?
How do I fix CVE-2025-48980?
No fix has been published for CVE-2025-48980 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-48980 being exploited?
There is no known exploitation of CVE-2025-48980 in the wild and no public exploit code.
Sources
Also known as GHSA-5w5v-4m3m-w7hq.