How severe is CVE-2020-9296?

CVE-2020-9296 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-9296 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9296?

CVE-2020-9296 affects Netflix Conductor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-9296?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-9296 published?

CVE-2020-9296 was published on 2020-06-16 and last updated on 2026-06-17.

CVE-2020-9296

CVE-2020-9296 is a critical-severity vulnerability in Netflix Conductor with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-917.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-917
Affected product: Netflix Conductor
Published: 2020-06-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-9296?: 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.
How severe is CVE-2020-9296?: CVE-2020-9296 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-9296 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9296?: CVE-2020-9296 affects Netflix Conductor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-9296?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-9296 published?: CVE-2020-9296 was published on 2020-06-16 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:netflix:conductor:*:*:*:*:*:*:*:*

Other CWE-917 vulnerabilities

CVE-2025-3322 — Critical (CVSS 10.0): An improper neutralization of inputs used in expression language allows remote code execution with the highest…
CVE-2022-22947 — Critical (CVSS 10.0): In spring cloud gateway versions prior to 3.1.1+ and 3.0.7+ , applications are vulnerable to a code injection attack…
CVE-2026-11561 — Critical (CVSS 9.8): Improper neutralization of special elements used in an expression language statement ('expression language injection')…
CVE-2026-22738 — Critical (CVSS 9.8): In Spring AI, a SpEL injection vulnerability exists in SimpleVectorStore when a user-supplied value is used as a…
CVE-2026-24713 — Critical (CVSS 9.8): Improper Input Validation vulnerability in Apache IoTDB. This issue affects Apache IoTDB: from 1.0.0 before 1.3.7,…
CVE-2023-51593 — Critical (CVSS 9.8): Voltronic Power ViewPower Pro Expression Language Injection Remote Code Execution Vulnerability. This vulnerability…

Browse all CWE-917 vulnerabilities →