CVE-2022-1071 json
User after free in mrb_vm_exec in mruby/mruby
published 2022-03-26 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-24415
- cvss
- 7.7
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
User after free in mrb_vm_exec in GitHub repository mruby/mruby prior to 3.2.
Patch / fix
- mruby mruby/mruby 3.2
- mruby Debian 14, Debian 13, Debian 12 3.1.0-1
debian advisories DEBIAN-CVE-2022-1071
- mruby Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 3.1.0-r0
alpine advisories ALPINE-CVE-2022-1071
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/6597ece9-07af-415b-809b-919ce0a17cf3 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.7 | CVSS:3.0/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 8.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- mruby mruby/mruby
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
github.com
/mruby/mruby/commit/aaa28a508903041dd7399d4159a8ace9766b022f
patch, third-party-advisory
-
huntr.dev
/bounties/6597ece9-07af-415b-809b-919ce0a17cf3
exploit, patch, third-party-advisory
Sources
- CVE List CVE-2022-1071
- NVD CVE-2022-1071
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.