CVE-2023-6871
MEDIUMCVSS 4.3/10EPSS 0.49%
Last modified
CVE-2023-6871 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler. This vulnerability affects Firefox < 121.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.
Description
Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler. This vulnerability affects Firefox < 121.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 121.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1828334Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/202401-10Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-56/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1828334Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/202401-10Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-56/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-6871?
Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler. This vulnerability affects Firefox < 121.
How severe is CVE-2023-6871?
CVE-2023-6871 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.
How do I fix CVE-2023-6871?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2023
- CVE-2023-6865`EncryptingOutputStream` was susceptible to exposing uniniti…6.5
- CVE-2023-6866TypedArrays can be fallible and lacked proper exception hand…8.8
- CVE-2023-6867The timing of a button click causing a popup to disappear wa…6.1
- CVE-2023-6868In some instances, the user-agent would allow push requests …4.3
- CVE-2023-6869A `<dialog>` element could have been manipulated to paint…6.5
- CVE-2023-6870Applications which spawn a Toast notification in a backgroun…4.3
- CVE-2023-6872Browser tab titles were being leaked by GNOME to system logs…6.5
- CVE-2023-6873Memory safety bugs present in Firefox 120. Some of these bug…8.8
- CVE-2023-6874Prior to v7.4.0, Ember ZNet is vulnerable to a denial of ser…7.5
- CVE-2023-6875The POST SMTP Mailer – Email log, Delivery Failure Notificat…9.8
- CVE-2023-6876The Clever Fox – One Click Website Importer by Nayra Themes …5.4
- CVE-2023-6877The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, N…5.4
Are you affected by CVE-2023-6871?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST