CVE-2026-108598: Code Injection (CVSS 9.8)

Description

Floci 1.1.0 before 2.2.0 contains a code injection vulnerability in VtlTemplateEngine that allows unauthenticated attackers to execute commands via unrestricted Velocity mapping templates. Attackers can create a REST API with a MOCK integration whose template uses $util reflection to reach Runtime or ProcessBuilder, executing OS commands in the Floci JVM.

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0073

Probability of exploitation

0.53%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-94 CWE-94

References

Other References

https://github.com/floci-io/floci https://github.com/floci-io/floci/blob/560b3e4aae61cea3ac7d4d51843bdffd0e3085fd/src/main/java/io/github/hectorvent/floci/services/apigateway/VtlTemplateEngine.java#L74-L114 https://github.com/floci-io/floci/commit/144b90e6fa861a5ac882e99a090d503da01945c4 https://github.com/floci-io/floci/releases/tag/2.2.0 https://github.com/floci-io/floci/security/advisories/GHSA-3p4c-wp7w-mgjx https://github.com/ghostx-86/exploitarium/tree/main/floci-apigateway-vtl-rce-poc https://www.vulncheck.com/advisories/floci-1.1.0-before-2.2.0-rce-via-api-gateway-vtl-mapping-templates

Frequently Asked Questions

What is CVE-2026-108598? +

Floci 1.1.0 before 2.2.0 contains a code injection vulnerability in VtlTemplateEngine that allows unauthenticated attackers to execute commands via unrestricted Velocity mapping templates. Attackers can create a REST API with a MOCK integration whose template uses $util reflection to reach Runtime or ProcessBuilder, executing OS commands in the Floci JVM. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-108598? +

CVE-2026-108598 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0073, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-108598? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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