CVE-2019-3902
MEDIUMCVSS 5.1/10EPSS 1.41%
Last modified
CVE-2019-3902 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.. EPSS estimates a 1.41% chance of exploitation in the next 30 days.
Description
A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.
Metrics
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mercurial | Mercurial | < 4.9 |
| Debian | Debian Linux | 8.0 |
| Redhat | Enterprise Linux | 7.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3902Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/04/msg00024.htmlThird Party Advisory
- https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.9_.282019-02-01.29Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3902Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/04/msg00024.htmlThird Party Advisory
- https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.9_.282019-02-01.29Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-3902?
A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.
How severe is CVE-2019-3902?
CVE-2019-3902 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.
How do I fix CVE-2019-3902?
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.
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Are you affected by CVE-2019-3902?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST