CVE-2026-32284
Last modified
CVE-2026-32284 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Shamaton | Msgpack | <= 3.1.2 |
References
- https://github.com/golang/vulndb/issues/4513Issue Tracking, Third Party Advisory
- https://github.com/shamaton/msgpack/issues/59Issue Tracking, Vendor Advisory
- https://pkg.go.dev/vuln/GO-2026-4513Third Party Advisory
- https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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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.
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