CVE-2026-73633
Apache Struts: Unbounded read of a JSON request body
At a glance
- Source
- NVD
- EPSS
- EPSS 0.70 % · percentile 53 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
- NVD status
- Analyzed
Description
Uncontrolled resource consumption vulnerability in the JSON plugin of Apache Struts. When an application is configured to populate actions from a JSON request body, the plugin reads that body into memory without bounding how much it will accept, so a single request can exhaust the heap and deny service to other users. The plugin's configurable JSON input length limit does not bound this read. The JSON plugin is an optional component; applications that do not use it, or use it without enabling JSON request-body handling, are not affected. This issue affects Apache Struts: from 2.1.8 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1. Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-58662
- GCVE · GCVE-0-2026-73633
CERT-FR advisories
- CERTFR-2026-AVI-1256 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*≥ 2.1.8 ≤ 2.3.37cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*≥ 2.5.0 ≤ 2.5.33cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*≥ 6.0.0 < 6.11.0cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*≥ 7.0.0 < 7.3.0
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache Struts | affected 2.1.8 ≤ 2.3.37 ; affected 2.5.0 ≤ 2.5.33 ; affected 6.0.0 ≤ 6.10.0 ; affected 7.0.0 ≤ 7.2.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |