CVE-2026-106971

UnknownEPSS 0.15%

Last modified

CVE-2026-106971 is a vulnerability of currently unknown severity. An integer overflow in the MessagePack\BufferUnpacker component of rybakit/msgpack versions prior to 0.11.0 allows attackers to cause a denial of service via crafted MessagePack input when the application runs on 32-bit PHP. EPSS estimates a 0.15% chance of exploitation in the next 30 days.

Description

An integer overflow in the MessagePack\BufferUnpacker component of rybakit/msgpack versions prior to 0.11.0 allows attackers to cause a denial of service via crafted MessagePack input when the application runs on 32-bit PHP

Metrics

EPSS Probability
0.15%

4.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
——n/a

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-106971?
An integer overflow in the MessagePack\BufferUnpacker component of rybakit/msgpack versions prior to 0.11.0 allows attackers to cause a denial of service via crafted MessagePack input when the application runs on 32-bit PHP
How severe is CVE-2026-106971?
Severity scoring for CVE-2026-106971 is pending analysis. The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2026-106971?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST