Vulnerability · Published Oct 9, 2026 · Assigned by Google
CVE-2026-102554Denial of Service via Eager Array Allocation During Deserialization in Guava
High 8.2
In plain English
A high-severity resource allocation without limits in Guava from Google. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | guava-libraries | no fix listed | DEBIAN-CVE-2026-102554 |
| Debian:13 | guava-libraries | no fix listed | DEBIAN-CVE-2026-102554 |
| Debian:14 | guava-libraries | no fix listed | DEBIAN-CVE-2026-102554 |
| Maven | com.google.guava:guava | 33.7.2 | GHSA-xxph-c9ww-hj94 |
| Ubuntu:22.04:LTS | guava-libraries | no fix listed | UBUNTU-CVE-2026-102554 |
| Ubuntu:24.04:LTS | guava-libraries | no fix listed | UBUNTU-CVE-2026-102554 |
| Ubuntu:26.04:LTS | guava-libraries | no fix listed | UBUNTU-CVE-2026-102554 |
| Ubuntu:26.10 | guava-libraries | no fix listed | UBUNTU-CVE-2026-102554 |
Affected products (as reported)
Weakness: CWE-770, CWE-502 · 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