High severity · published Oct 9, 2026
CVE-2026-102554
Denial of Service via Eager Array Allocation During Deserialization in Guava
8.2
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GU
Guava · Google
4.0 before 33.7.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102554
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102554
github.com
https://github.com/google/guava/security/advisories/GHSA-xxph-c9ww-hj94
github.com
https://github.com/google/guava/commit/b931fe9d6d5cf00bc55714ad3308d086f71850fe
github.com
https://github.com/google/guava/releases/tag/v33.7.2
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