RCE in Provectus Kafka-Ui
CVE-2026-78166
A security flaw has been discovered in provectus kafka-ui up to 0.7.2. The affected element is the function executeSmartFilterTest of the file kafka-ui-api/src/main/java/com/provectus/kafka/ui/controller/MessagesController.java of the component Groovy Code Handler. The manipulation results in code injection. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (33.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Provectus Kafka-Ui — versions 0.7.0, 0.7.1, 0.7.2
Weakness classification (CWE)
References
- vuldb.com/vuln/394555 (technical-description, vdb-entry)
- vuldb.com/vuln/394555/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-78166 (third-party-advisory)
- vuldb.com/submit/883727 (third-party-advisory)
- github.com/provectus/kafka-ui/issues/4567 (issue-tracking, exploit)
- github.com/provectus/kafka-ui/ (product)
Frequently asked questions
- What is CVE-2026-78166?
- CVE-2026-78166 is a medium-severity vulnerability in Provectus Kafka-Ui, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-08-24.
- How severe is CVE-2026-78166?
- Medium severity. CVSS v3 base score is 6.3 out of 10.