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CVE-2025-48980VulnerabilityPublished

In Brave Browser Desktop versions prior to 1.83.10 that have the split view feature enabled, the "Open Link in Split

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Authoritative record:CVE-2025-48980· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium · fixed in 1.83.10 : update Brave Browser Desktop when convenient.

Data as of 29 Oct 2026, 23:21 UTC

CVSS 3.0 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
Affects
Brave Browser Desktop prior to 1.83.10
Patch
Available – fixed in 1.83.10
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

AI-suggested

Users and administrators should update Brave Browser Desktop to version 1.83.10 or later, where this issue is fixed. Since the vulnerability affects versions prior to 1.83.10, applying this official fix fully mitigates the risk. No additional mitigations are specified.

Description

A vulnerability in Brave Browser Desktop versions prior to 1.83.10 with the split view feature enabled causes the "Open Link in Split View" context menu item to ignore the SameSite cookie attribute. This results in SameSite=Strict cookies being sent during cross-site navigation, potentially exposing sensitive cookie data.

References

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