Is CVE-2026-33553 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-33553 being exploited in the wild.

How severe is CVE-2026-33553?

Informational severity, with a CVSS score of 0, published 2 June 2026.

Which products and versions are affected?

Northern.tech CFEngine Enterprise 3.24.3 before 3.24.4, 3.27.0 before 3.27.1.

Is there a fix for CVE-2026-33553?

A patch was published on 2026-05-08: Versions 3.24.4 and 3.27.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-33553 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-33553?

Check whether you run Northern.tech CFEngine Enterprise at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-33553: Northern.tech CFEngine Enterprise XSS in Mission Portal

CVE-2026-33553 · Severity: info · CVSS 0 · Published 2026-06-02

A security vulnerability exists in CFEngine Enterprise, a platform used for automated device management and infrastructure configuration. An attacker with low-level access could trick an administrator into clicking a malicious link, allowing the attacker to run unauthorized code in the administrator's browser. If successful, this could lead to a full takeover of the management hub and all connected infrastructure.

Technologies: Northern.tech CFEngine Enterprise. Vendors: Northern.tech.

Quick answers

Is CVE-2026-33553 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-33553 being exploited in the wild.
How severe is CVE-2026-33553?: Informational severity, with a CVSS score of 0, published 2 June 2026.
Which products and versions are affected?: Northern.tech CFEngine Enterprise 3.24.3 before 3.24.4, 3.27.0 before 3.27.1.
Is there a fix for CVE-2026-33553?: A patch was published on 2026-05-08: Versions 3.24.4 and 3.27.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-33553 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-33553?: Check whether you run Northern.tech CFEngine Enterprise at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A cross-site scripting (XSS) vulnerability exists in the CFEngine Enterprise Mission Portal due to an incorrect Content-Type HTTP header returned by certain API endpoints. This misconfiguration allows browsers to execute JavaScript contained within API responses that may include user-controlled data. An authenticated attacker with low privileges can exploit this by injecting malicious scripts into specific fields and then enticing an administrator to click a crafted API link. Successful exploitation allows the attacker to execute code in the context of the administrator's session, leading to privilege escalation and potential full control over the CFEngine hub and managed nodes. The issue is fixed in versions 3.24.4 and 3.27.1.

Affected products

Northern.tech CFEngine Enterprise 3.24.3 before 3.24.4, 3.27.0 before 3.27.1

Timeline

2026-05-08: patched: Versions 3.24.4 and 3.27.1 released
2026-06-01: advisory: Vendor blog post published
2026-06-02: disclosed: CVE published to NVD

References

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