How severe is CVE-2025-48980?

CVE-2025-48980 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-48980 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-48980?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-48980 have an EU (EUVD) identifier?

Yes. CVE-2025-48980 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37235.

When was CVE-2025-48980 published?

CVE-2025-48980 was published on 2025-10-31 and last updated on 2026-06-17.

CVE-2025-48980

CVE-2025-48980 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-565.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37235
Weakness: CWE-565
Published: 2025-10-31
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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. Therefore SameSite=Strict cookies would be sent on a cross-site navigation using this method.
How severe is CVE-2025-48980?: CVE-2025-48980 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-48980 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-48980?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-48980 have an EU (EUVD) identifier?: Yes. CVE-2025-48980 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37235.
When was CVE-2025-48980 published?: CVE-2025-48980 was published on 2025-10-31 and last updated on 2026-06-17.

References

https://hackerone.com/reports/3253725

Other CWE-565 vulnerabilities

CVE-2023-41084 — Critical (CVSS 10.0): Session management within the web application is incorrect and allows attackers to steal session cookies to perform a…
CVE-2014-125112 — Critical (CVSS 9.8): Plack::Middleware::Session::Cookie versions through 0.21 for Perl allows remote code…
CVE-2022-50926 — Critical (CVSS 9.8): WAGO 750-8212 PFC200 G2 2ETH RS firmware contains a privilege escalation vulnerability that allows attackers to…
CVE-2025-65212 — Critical (CVSS 9.8): An issue was discovered in NJHYST HY511 POE core before 2.1 and plugins before 0.1. The vulnerability stems from the…
CVE-2025-14440 — Critical (CVSS 9.8): The JAY Login & Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including,…
CVE-2025-2395 — Critical (CVSS 9.8): The U-Office Force from e-Excellence has an Improper Authentication vulnerability, allowing unauthenticated remote…

Browse all CWE-565 vulnerabilities →