CVE-2026-102554

Denial of Service via Eager Array Allocation During Deserialization in Guava

State: Published
Severity: 8.2 High
Published: Oct 9, 2026
Updated: Oct 9, 2026
Reserved: Sep 29, 2026

Description

Allocation of resources without limits or throttling (CWE-770) during Java object deserialization in Google Guava versions 4.0 through 33.7.1 allows an attacker to cause a Denial of Service via OutOfMemoryError. When deserializing CompactHashMap, CompactHashSet, or MapMakerInternalMap instances, Guava eagerly allocates an array based on a caller-specified size parameter without throttling, permitting memory exhaustion from crafted serialization streams.

Scores

CVSS	Score	Vector	Source
4.0	8.2 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	Google

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling
CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
GuavaGoogle	4.0 to before 33.7.2Affected

References

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