CVE catalog
CVE-2026-90473
msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker.skipValue() when processing MAP32 containers with large element counts. Attackers can supply a MAP32 element c
- Severity
- Medium · CVSS 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.41% · Oct 25, 2026
msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker.skipValue() when processing MAP32 containers with large element counts. Attackers can supply a MAP32 element count at or above 0x40000000 that wraps when doubled, causing the parser cursor to desynchronize and attacker-controlled data to be returned in place of later fields.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | msgpack-java | sid | 0.9.6-1 | vulnerable |
| Debian | msgpack-java | forky | 0.9.6-1 | vulnerable |
| Debian | msgpack-java | trixie | 0.9.6-1 | vulnerable |
| Debian | msgpack-java | bookworm | 0.9.3-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | msgpack-java | source | sid | (unfixed) | not yet assigned | Not reported | [1148829] |
| Debian | msgpack-java | source | forky | (unfixed) | not yet assigned | Not reported | [1148829] |
| Debian | msgpack-java | source | trixie | (unfixed) | not yet assigned | Not reported | [1148829] |
| Debian | msgpack-java | source | bookworm | (unfixed) | not yet assigned | Not reported | [1148829] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libmsgpack-java]Affected
Source package: [msgpack-java]
Details (2)
0.9.3-1· all · bookwormAffected
nvd · msgpack-java · debian · bookworm; nvd · msgpack-java · debian · 12
0.9.3-1· all · bookwormAffected
nvd · msgpack-java · debian · bookworm; nvd · msgpack-java · debian · 12
[Debian 13 (Trixie)]
- [libmsgpack-java]Affected
Source package: [msgpack-java]
Details (2)
0.9.6-1· all · trixieAffected
nvd · msgpack-java · debian · 13
0.9.6-1· all · trixieAffected
nvd · msgpack-java · debian · 13
Observed: