VulnerabilityDeferred

CVE-2025-48980

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.

MEDIUM 6.5EPSS 0.30%

Does this matter?

Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.0: 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS: 0.30% probability · 23th percentile
CISA KEV: Not listed
Weakness: CWE-565
Source: support@hackerone.com

References

https://hackerone.com/reports/3253725

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.