CVE-2020-9296

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-16 · updated 2026-06-17
Weakness: CWE-917

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.

Affected products

Netflix Conductor: through 2.25.3

References

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

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