CRITICALCVSS v3.1 9.9Vulnerability
CVE-2026-115893
Wasmtime is a runtime for WebAssembly. Prior to 36.0.19, 48.0.7, and 49.0.4, the Cranelift compiler backend on aarch64 can compile a Wasm br_table instruction with more than approximately 256,000 targets so that it has an incorrect conditional branch target. The branch can then jump to arbitrary other code at a user-controlled offset, allowing a user-controlled Wasm module to escape the sandbox on aarch64 engines using the default Cranelift backend. This issue is fixed in versions 36.0.19, 48.0.7, and 49.0.4.
Properties
- Severity
- CRITICAL
- Nvd fetched at
- 2026-10-23T22:30:12.098505+00:00
- Cvss score
- 9.9
- Cvss severity
- CRITICAL
- Retrieved at
- 2026-10-23T22:32:25+00:00
- Score
- 9.9
- Last source
- NVD
- Cvss version
- 3.1
- Cve id
- CVE-2026-115893
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- First seen by Signal
- 2026-10-23T22:32:25+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Published at
- 2026-10-23T22:16:58.820
- Last modified
- 2026-10-23T22:16:58.947
Related Entities (1)
HAS_WEAKNESS (1)
Explore deeper with Ninja Signal's threat intelligence graph