CVE-2026-30624: Agent Zero 0.9.8 contains a remote code execution vulnerability in its External MCP Servers configuration feat

This month

HIGH 8.6REMOTEDOWNGRADE

CVE-2026-30624 is a high-severity flaw (CVSS 8.6) affecting agent-zero. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Agent Zero 0.9.8 contains a remote code execution vulnerability in its External MCP Servers configuration feature. The application allows users to define MCP servers using a JSON configuration containing arbitrary command and args values. These values are executed by the application when the configuration is applied without sufficient validation or restriction. An attacker may supply a malicious MCP configuration to execute arbitrary operating sy

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-77
Published	2026-04-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: agent-zero

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-15 16:16 UTCPublished CVE record published
2026-06-17 10:32 UTCUpdated Record last modified

agent-zero agent-zero DOWNGRADE

Affected: 0.9.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.8

1. Check installed version

apt-cache policy agent-zero || rpm -q agent-zero || agent-zero --version

2. No fixed release: DOWNGRADE to a release before 0.9.8 (Debian / Ubuntu)

apt-cache madison agent-zero sudo apt install agent-zero=<VERSION_BEFORE_0.9.8> sudo apt-mark hold agent-zero

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list agent-zero sudo dnf downgrade agent-zero-<VERSION_BEFORE_0.9.8> sudo dnf versionlock add agent-zero

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-30624?

agent-zero: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-30624 being exploited?

CVE-2026-30624 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-30624 affect?

CVE-2026-30624 affects agent-zero. Severity is high (CVSS 8.6). Agent Zero 0.9.8 contains a remote code execution vulnerability in its External MCP Servers configuration feature. The application allows users to define MCP servers using a JSON configuration containing arbitrary command and args values. T

How urgent is CVE-2026-30624?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

References

← Back to latest CVEs