CVE-2026-90473
Last modified
CVE-2026-90473 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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..
Description
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| msgpack | msgpack-java | <= 0.9.12 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-90473?
How severe is CVE-2026-90473?
How do I fix CVE-2026-90473?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-9046A potential insecure permissions vulnerability was reported …7.3
- CVE-2026-90460An issue was discovered in OpenStack Keystone before 29.0.3.…7.6
- CVE-2026-90461OpenStack Ironic through 38.0.0 may send a username and pass…6.3
- CVE-2026-90467aiosmtplib before 5.1.3 fails to properly validate email add…4
- CVE-2026-9047Improper handling of factor key state in the multi-factor au…7.6
- CVE-2026-90472msgpack-java through 0.9.12 contains a stack overflow vulner…5.3
- CVE-2026-90474MCPHub before 1.0.32 contains an authentication bypass vulne…6.8
- CVE-2026-9048The Slider Revolution plugin for WordPress is vulnerable to …4.3
- CVE-2026-90485A flaw has been found in IOBit Uninstaller 15.5.0.11. Affect…5.5
- CVE-2026-90486A vulnerability has been found in openstatusHQ openstatus up…6.3
- CVE-2026-90487A vulnerability was found in Xuxueli xxl-job up to 3.4.2. Af…4.3
- CVE-2026-90488A vulnerability was determined in Xuxueli xxl-job up to 3.4.…6.3
Are you affected by CVE-2026-90473?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST