Vulnerability details
CVE-2026-32284
github.com/shamaton/msgpack github.com/shamaton/msgpackgithub.com/shamaton/msgpack/v2 github.com/shamaton/msgpack/v2github.com/shamaton/msgpack/v3 github.com/shamaton/msgpack/v3
Denial of service in github.com/shamaton/msgpack
CVSS 3.1
7.5High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| github.com/shamaton/msgpack | github.com/shamaton/msgpack | All | CVEProject cvelistV5 (CNA) |
| github.com/shamaton/msgpack/v2 | github.com/shamaton/msgpack/v2 | v < 2.4.1 | CVEProject cvelistV5 (CNA) |
| github.com/shamaton/msgpack/v3 | github.com/shamaton/msgpack/v3 | v < 3.1.1 | CVEProject cvelistV5 (CNA) |
References and advisories
4
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Details
- Published
- 2026-03-26
- Last updated
- 2026-10-07
- State
- Published
- Assigner (CNA)
- Go
Exploit prediction (EPSS)
0.42%
Probability of exploitation in 30 days
36.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- —