CVE-2026-102554: Insecure Deserialization

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.

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Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

CWE-770 CWE-770

References

Other References

https://github.com/google/guava/commit/b931fe9d6d5cf00bc55714ad3308d086f71850fe https://github.com/google/guava/releases/tag/v33.7.2 https://github.com/google/guava/security/advisories/GHSA-xxph-c9ww-hj94 https://github.com/google/guava/security/advisories/GHSA-xxph-c9ww-hj94

Frequently Asked Questions

What is CVE-2026-102554? +

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.

How do I check if I'm vulnerable to CVE-2026-102554? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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