How severe is CVE-2026-8766?

CVE-2026-8766 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-8766 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8766?

CVE-2026-8766 affects Kilo Kilo Code Cli. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8766?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8766 have an EU (EUVD) identifier?

Yes. CVE-2026-8766 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30710.

When was CVE-2026-8766 published?

CVE-2026-8766 was published on 2026-05-17 and last updated on 2026-06-17.

CVE-2026-8766

CVE-2026-8766 is a medium-severity vulnerability in Kilo Kilo Code Cli with a CVSS 3.x base score of 4.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
CVSS v4: 2.1
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30710
Weakness: CWE-200
Affected product: Kilo Kilo Code Cli
Published: 2026-05-17
Last modified: 2026-06-17

Description

A flaw has been found in Kilo-Org kilocode up to 7.0.47. This issue affects the function Load of the file packages/opencode/src/config/config.ts of the component Environment Variable Handler. Executing a manipulation of the argument KILO_CONFIG_CONTENT can lead to information disclosure. It is possible to launch the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-8766?: A flaw has been found in Kilo-Org kilocode up to 7.0.47. This issue affects the function Load of the file packages/opencode/src/config/config.ts of the component Environment Variable Handler. Executing a manipulation of the argument KILO_CONFIG_CONTENT can lead to information disclosure. It is possible to launch the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-8766?: CVE-2026-8766 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-8766 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8766?: CVE-2026-8766 affects Kilo Kilo Code Cli. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8766?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8766 have an EU (EUVD) identifier?: Yes. CVE-2026-8766 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30710.
When was CVE-2026-8766 published?: CVE-2026-8766 was published on 2026-05-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kilo:kilo_code_cli:*:*:*:*:*:node.js:*:*

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