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Advisory record · GHSA-3rfq-4wpf-qqw3

Micronaut has Unbounded `bundleCache` in `ResourceBundleMessageSource` that Allows Memory Exhaustion via `Accept-Language` Header

CVSS 3.7 LowEPSS 0.0026 · 17th percentile

Published by the GitHub Advisory Database at 6 May 2026, 19:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.micronaut:micronaut-injectMaven>=4.10.0, <4.10.22 || >=3.10.0, <3.10.6 || <3.8.144.10.22, 3.10.6, 3.8.14
Identifiers
GHSA-3rfq-4wpf-qqw3 · CVE-2026-44242
Weakness (CWE)
CWE-400
Tags
Published
6 May 2026
Updated
30 Jun 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Micronaut's micronaut-inject package is affected in versions from 4.10.0 before 4.10.22, from 3.10.0 before 3.10.6, and before 3.8.14. An unauthenticated attacker can exhaust heap memory on applications that register a ResourceBundleMessageSource bean and serve HTML error responses, by sending requests with many unique Accept-Language values. Upgrade to 4.10.22, 3.10.6, or 3.8.14, depending on your release line.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
3.7 Low 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0026, the 17th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.