OSV-2026-1220
Use-of-uninitialized-value in str_escape
No scoreFix available
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=554268877
Crash type: Use-of-uninitialized-value
Crash state:
str_escape
mrb_vm_exec
yield_with_attr
What each source reports
OSV No score
Use-of-uninitialized-value in str_escape
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=554268877
Crash type: Use-of-uninitialized-value
Crash state:
str_escape
mrb_vm_exec
yield_with_attr
- Record
OSV-2026-1220- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mrubyOSS-Fuzz |
Listed versions, plus commit ranges 4.0.04.0.0-rc4.0.0-rc24.0.0-rc34.0.0-rc44.1.0-rc4.1.0-rc2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
OSV-2026-1220 is a vulnerability with no CVSS score yet in mruby, published August 31, 2026. No source lists public exploit code. A source reports a fix.