CVE-2026-32284
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 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-25)
- CWE
- CWE-125
- Published
- Modified
- Record from
- the NVD, synced
Affected
- shamaton:msgpack
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-h9q6-hc68-35rp | Go | github.com/shamaton/msgpack/v2 | <=2.4.0 | no fix published |
| GHSA-h9q6-hc68-35rp | Go | github.com/shamaton/msgpack/v3 | <=3.1.0 | no fix published |
| GO-2026-4513 | Go | github.com/shamaton/msgpack | all versions | no fix published |
| GO-2026-4513 | Go | github.com/shamaton/msgpack/v2 | <2.4.1 | 2.4.1 |
| GO-2026-4513 | Go | github.com/shamaton/msgpack/v3 | <3.1.1 | 3.1.1 |