# Apache Avro Java SDK: Arbitrary Code Execution when reading Avro Data (Java SDK)

Advisory record · `GHSA-r7pg-v2c8-mfg3`

- **Identifiers:** `GHSA-r7pg-v2c8-mfg3` · `CVE-2024-47561`
- **State:** Confirmed
- **Severity:** CVSS 9.2 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-502](https://cwe.mitre.org/data/definitions/502.html)
- **Tags:** [Insecure deserialization](https://agentprime.io/advisories/tag/deserialization.md)
- **Published:** 3 Oct 2024
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 3 Oct 2024, 12:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.2: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `org.apache.avro:avro` (Maven): affected `<1.11.4`; fixed in `1.11.4`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Apache Avro's Java SDK (org.apache.avro:avro) versions before 1.11.4 are vulnerable. An attacker who can supply a schema for parsing can execute arbitrary code. Upgrade to avro 1.11.4 or later, such as 1.12.0, which fix the issue.

Written 2 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.2 Critical, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`, from CNA (apache)

- **CISA KEV:** Not listed.
- **EPSS:** 0.033, the 88th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:17 UTC: First seen by agentprime
- 31 Oct 2026, 14:17 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-r7pg-v2c8-mfg3)

## Sources

- [GitHub Advisory Database: GHSA-r7pg-v2c8-mfg3](https://github.com/advisories/GHSA-r7pg-v2c8-mfg3)
- [OSV: GHSA-r7pg-v2c8-mfg3](https://osv.dev/vulnerability/GHSA-r7pg-v2c8-mfg3)
- <https://nvd.nist.gov/vuln/detail/CVE-2024-47561>
- <https://github.com/apache/avro/pull/2934>
- <https://github.com/apache/avro/pull/2980>
- <https://github.com/apache/avro/commit/8f89868d29272e3afea2ff8de8c85cb81a57d900>
- <https://github.com/apache/avro/commit/f6b3bd7e50e6e09fedddb98c61558c022ba31285>
- <https://github.com/apache/avro>
- <https://issues.apache.org/jira/browse/AVRO-3985>
- <https://lists.apache.org/thread/c2v7mhqnmq0jmbwxqq3r5jbj1xg43h5x>
- <https://security.netapp.com/advisory/ntap-20241011-0003>
- <https://thehackernews.com/2024/10/critical-apache-avro-sdk-flaw-allows.html>
- <https://www.openwall.com/lists/oss-security/2024/10/03/1>
- <http://www.openwall.com/lists/oss-security/2024/10/03/1>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-r7pg-v2c8-mfg3>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-r7pg-v2c8-mfg3/>. Everything for agents: <https://agentprime.io/llms.txt>.