CVE-2026-120367: Apache Axis2 denial of service via unbounded JSON request buffering

CVE-2026-120367 · Severity: info · Published 2026-11-09

Apache Axis2 is a web services framework that processes SOAP and JSON messages for enterprise applications. An attacker can send a large JSON request to exhaust the server's memory, causing the service to become unavailable. This affects unauthenticated users and requires no special privileges or user interaction.

Technologies: Apache Axis2\. Vendors: Apache.

Quick answers

Is CVE-2026-120367 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-120367 being exploited in the wild.
How severe is CVE-2026-120367?
Informational severity, published 9 November 2026.
Which products and versions are affected?
Apache Axis2\ through 2.0.1.
Is there a fix for CVE-2026-120367?
Yes: fixed in 2.0.2. Until then: Upgrade to Apache Axis2 2.0.2 or later, which introduces the jsonMaxRequestSize configuration parameter. If immediate upgrade is not possible, restrict network access to Axis2 endpoints or implement reverse-proxy rate limiting on JSON request sizes.</anigation> <parameter name="timeline">[{"kind": "disclosed", "at": "2026-11-09"}] Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-120367 attacked?
It is attacked over the network.
Am I affected by CVE-2026-120367?
Check whether you run Apache Axis2\ at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 2.0.2

Upgrade to Apache Axis2 2.0.2 or later, which introduces the jsonMaxRequestSize configuration parameter. If immediate upgrade is not possible, restrict network access to Axis2 endpoints or implement reverse-proxy rate limiting on JSON request sizes.</anigation> <parameter name="timeline">[{"kind": "disclosed", "at": "2026-11-09"}]

Technical details

The JSON message builders (Gson, Moshi, HTTP/2 variants) in Apache Axis2 buffer the entire request body without size limits, allowing an unauthenticated attacker to trigger memory exhaustion via a large JSON payload. This is a classic resource exhaustion vulnerability affecting the request parsing stage before authentication occurs. Version 2.0.2 introduces the configurable jsonMaxRequestSize parameter to bound request sizes.

Affected products

  • Apache Axis2 through 2.0.1

References

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