CVE-2022-1212
CRITICALCVSS 9.8/10EPSS 1.68%
Last modified
CVE-2022-1212 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.. EPSS estimates a 1.68% chance of exploitation in the next 30 days.
Description
Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Mruby | Mruby | <= 3.0.0 | — |
| Mruby | Mruby | 3.1.0 | Rc |
References
- https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6Patch, Third Party Advisory
- https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abeExploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6Patch, Third Party Advisory
- https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abeExploit, Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-1212?
Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.
How severe is CVE-2022-1212?
CVE-2022-1212 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.68% probability of exploitation in the next 30 days.
How do I fix CVE-2022-1212?
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-2022-1212?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST