Use After Free in mruby/mruby
Priority LOW 34CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
Use After Free in GitHub repository mruby/mruby prior to 3.2.
Why it matters now
EPSS 0.00404 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed mruby/mruby (mruby): 3.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA mruby/mruby (mruby) Fixed in 3.2
Timeline
- 2026-10-02 Threatist record created from CVE-2022-1934
- 2026-10-03 Alias added: GHSA-hp4r-26gw-f2r8
References
More Mruby vulnerabilities
- TI-2022-00033 Heap-based Buffer Overflow in mruby/mruby CVSS 3.1CRITICAL 9.8
- TI-2026-01636 mruby JMPNOT-to-JMPIF Optimization vm.c mrb_vm_exec use after free CVSS 4.0MEDIUM 4.8
- TI-2025-11794 mruby array.c ary_fill_exec out-of-bounds write CVSS 4.0MEDIUM 4.8
- TI-2025-06567 mruby nregs codegen.c scope_new heap-based overflow CVSS 4.0MEDIUM 4.8
- TI-2018-07224 In versions of mruby up to and including 1.4.0, an integer overflow exists in… CVSS 3.1CRITICAL 9.8
- TI-2022-01100 Use-After-Free in str_escape in mruby/mruby in mruby/mruby CVSS 3.1CRITICAL 9.8
Sources
- CVE-2022-1934 · CVE Program
- CVE-2022-1934 · NVD
- FIRST EPSS
- GHSA-hp4r-26gw-f2r8 · GitHub Advisory Database · CC BY 4.0
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