CVE-2026-102554 PUBLISHED

Denial of Service via Eager Array Allocation During Deserialization in Guava

Assigner: Google
Reserved: 29.09.2026 Published: 09.10.2026 Updated: 09.10.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 8.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Google
Product	Guava
Versions	Default: unaffected affected from 4.0 to 33.7.2 (excl.)

Credits

Kaya Emre Arikan (https://github.com/kemrec) finder

References

Problem Types

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

Impacts

CAPEC-130 Excessive Allocation
CAPEC-586 Object Injection