Dashboard / CVE-2026-57585

CVE-2026-57585

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-06-30 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This issue has been fixed in version 1.2.1.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
msgpack messagepack < 1.2.1

References & Advisories (2)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.49%
Raw Score 0.004880
Percentile 41.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00488
2026-10-28
0.00488

Intelligence Sources

nvd ref →

External Links