CVE-2026-115391
Last modified
CVE-2026-115391 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 contains an uncontrolled resource allocation vulnerability in its WASIp3 implementation that buffers guest-specified-length writes on the host without limit. Malicious guests can offer large buffers to WASIp3 file or HTTP write streams, causing the host to copy and buffer all bytes, bounded only by guest linear memory, exhausting host memory..
Description
Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 contains an uncontrolled resource allocation vulnerability in its WASIp3 implementation that buffers guest-specified-length writes on the host without limit. Malicious guests can offer large buffers to WASIp3 file or HTTP write streams, causing the host to copy and buffer all bytes, bounded only by guest linear memory, exhausting host memory.
Metrics
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-115391?
How severe is CVE-2026-115391?
How do I fix CVE-2026-115391?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-115386Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 be…2.6
- CVE-2026-115387Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 be…6.2
- CVE-2026-115388wasmtime-wasi-http in Wasmtime before 36.0.16, 37.0.0 before…6.2
- CVE-2026-115389Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 be…2.3
- CVE-2026-11539IBM WebSphere Application Server 9.0 and 8.5 is affected by …5.3
- CVE-2026-115390Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 conta…5.7
- CVE-2026-115392Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 befor…7.9
- CVE-2026-115393Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 befor…3.8
- CVE-2026-115394Ghidra through 12.2 contains an uncontrolled memory allocati…5.5
- CVE-2026-115395Ghidra 10.3 before 12.2 contains a resource allocation witho…5.5
- CVE-2026-115396Ghidra 10.3 before 12.2 contains an improper handling of hig…5.5
- CVE-2026-115397Ghidra before 12.2 contains a resource allocation without li…5.5
Are you affected by CVE-2026-115391?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST