VDB
DEBIAN-CVE-2025-68131
DEBIAN-CVE-2025-68131
PUBLISHED
CVSS 7.5 HIGH
cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag (28) persist in memory and can be accessed by subsequent CBOR messages using the sharedref tag (29). This allows an attacker-controlled message to read data from previously decoded messages if the decoder is reused across trust boundaries. Version 5.8.0 patches the issue.
Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | cbor2 | 0, 5.7.1-1, 5.7.0-1 |
| Debian:12 | cbor2 | 5.7.0-1, 5.7.1-1, 5.8.0-1 |
| Debian:13 | cbor2 | 5.9.0-2, 0, 5.6.5-1 |
| Debian:11 | cbor2 | 5.4.3-3, 5.4.5-1, 5.4.6-1 |
Timeline
- Dec 31, 2025 CVE Published
- Apr 28, 2026 CVE Updated