CVE-2026-115392— Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 Sandbox Escape via Trailing Slashes
Quick assessment
Affected
bytecodealliance wasmtime
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在以下版本的 Wasmtime 中，由于 对其 依赖在 macOS 以及不支持 的 Linux 内核上错误处理带有尾部斜杠的符号链接，导致存在文件系统沙箱逃逸漏洞： 24.0.13 之前的版本 25.0.0 至 36.0.14 之前的版本 37.0.0 至 46.0.3 之前的版本 47.0.0 至 47.0.4 之前的版本 若 Guest（即沙箱内的程序）对任意沙箱目录拥有写权限，则可读写主机上任何可访问的文件；即使 Guest 仅为只读权限，也可通过已存在的符号链接读取主机文件。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1221 · Template InjectionAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| bytecodealliance | wasmtime | < 24.0.13 |
affected |
24.0.13 |
unaffected | ||
25.0.0< 36.0.14 |
affected | ||
36.0.14 |
unaffected | ||
37.0.0< 46.0.3 |
affected | ||
46.0.3 |
unaffected | ||
47.0.0< 47.0.4 |
affected | ||
47.0.4 |
unaffected |
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I. Basic Information for CVE-2026-115392
Vulnerability Information
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Vulnerability Title
Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 Sandbox Escape via Trailing Slashes
Source: CVE Program / CVE List V5
Vulnerability Description
Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 allows a filesystem sandbox escape in wasmtime-wasi because its cap-std dependency mishandles symlinks with trailing slashes on macOS and Linux kernels lacking openat2. A guest with write access to any sandboxed directory can read and write any host-accessible file, and read-only guests may read host files via preexisting symlinks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-61
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| bytecodealliance | wasmtime | 0 ~ 24.0.13 | - |
|
II. Public POCs for CVE-2026-115392
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-115392 (2)
Same Patch Batch · bytecodealliance · 2026-10-22 · 15 CVEs total
| CVE-2026-115384 | 9.9 CRITICAL | Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 Stack Buffer Overflow |
| CVE-2026-115388 | 6.2 MEDIUM | Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 Memory Exhaustion |
| CVE-2026-115385 | 6.2 MEDIUM | Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 Host Panic via WASIp3 Timestamps |
| CVE-2026-115387 | 6.2 MEDIUM | Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 Host Panic via WAS |
| CVE-2026-115391 | 5.8 MEDIUM | Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 Unbounded Heap Allocation via WASIp |
| CVE-2026-115390 | 5.7 MEDIUM | Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel Accounting Bypass DoS |
| CVE-2026-115379 | 5.7 MEDIUM | Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via try_call |
| CVE-2026-115382 | 4.8 MEDIUM | Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 wasi:http Zero Timeout Panic DoS |
| CVE-2026-115381 | 4.8 MEDIUM | Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 Unbounded Host Mem |
| CVE-2026-115383 | 4.8 MEDIUM | Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via Tag Imports |
| CVE-2026-115380 | 4.0 MEDIUM | Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 Fuel Limit Bypass |
| CVE-2026-115393 | 3.8 LOW | Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47 |
| CVE-2026-115386 | 2.6 LOW | Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 Memory Disclosure |
| CVE-2026-115389 | 2.3 LOW | Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 Denial of Service |
IV. Related Vulnerabilities
Same product: wasmtime
-
CVE-2026-115393
Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 befor -
CVE-2026-115391
Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 Unbou -
CVE-2026-115390
Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel -
CVE-2026-115389
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 be -
CVE-2026-115388
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 be
Same vendor: bytecodealliance
-
CVE-2026-115393
Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 befor -
CVE-2026-115391
Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 Unbou -
CVE-2026-115390
Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel -
CVE-2026-115389
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 be -
CVE-2026-115388
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 be
Same weakness: CWE-61
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Oc: oc: symlink/hardlink target validation bypass in oc imag -
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Symlink creation in qsyncsrv.cgi -
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ngx_cache_purge模块符号链接攻击导致文件删除漏洞
V. Comments for CVE-2026-115392
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