How severe is CVE-2026-27602?

CVE-2026-27602 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-27602 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27602?

CVE-2026-27602 affects Modoboa. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27602?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-27602 have an EU (EUVD) identifier?

Yes. CVE-2026-27602 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15951.

When was CVE-2026-27602 published?

CVE-2026-27602 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-27602

CVE-2026-27602 is a high-severity vulnerability in Modoboa with a CVSS 3.x base score of 7.2. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15951
Weakness: CWE-78
Affected product: Modoboa
Published: 2026-03-25
Last modified: 2026-06-17

Description

Modoboa is a mail hosting and management platform. Prior to version 2.7.1, `exec_cmd()` in `modoboa/lib/sysutils.py` always runs subprocess calls with `shell=True`. Since domain names flow directly into shell command strings without any sanitization, a Reseller or SuperAdmin can include shell metacharacters in a domain name to run arbitrary OS commands on the server. Version 2.7.1 patches the issue.

Frequently asked questions

What is CVE-2026-27602?: Modoboa is a mail hosting and management platform. Prior to version 2.7.1, `exec_cmd()` in `modoboa/lib/sysutils.py` always runs subprocess calls with `shell=True`. Since domain names flow directly into shell command strings without any sanitization, a Reseller or SuperAdmin can include shell metacharacters in a domain name to run arbitrary OS commands on the server. Version 2.7.1 patches the issue.
How severe is CVE-2026-27602?: CVE-2026-27602 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-27602 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27602?: CVE-2026-27602 affects Modoboa. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27602?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-27602 have an EU (EUVD) identifier?: Yes. CVE-2026-27602 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15951.
When was CVE-2026-27602 published?: CVE-2026-27602 was published on 2026-03-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:modoboa:modoboa:*:*:*:*:*:*:*:*

More vulnerabilities in Modoboa

CVE-2023-0777 — Critical (CVSS 9.8): Authentication Bypass by Primary Weakness in GitHub repository modoboa/modoboa prior to 2.0.4.
CVE-2023-2227 — Critical (CVSS 9.1): Improper Authorization in GitHub repository modoboa/modoboa prior to 2.1.0.
CVE-2023-5690 — High (CVSS 8.8): Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.2.2.
CVE-2023-2228 — Medium (CVSS 6.8): Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.1.0.
CVE-2023-0438 — Medium (CVSS 6.5): Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.0.4.
CVE-2023-0398 — Medium (CVSS 6.5): Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.0.4.

All CVEs affecting Modoboa →

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