How severe is CVE-2026-30238?

CVE-2026-30238 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-30238 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30238?

CVE-2026-30238 affects Intermesh Group-office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30238?

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

Does CVE-2026-30238 have an EU (EUVD) identifier?

Yes. CVE-2026-30238 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10080.

When was CVE-2026-30238 published?

CVE-2026-30238 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-30238

CVE-2026-30238 is a medium-severity vulnerability in Intermesh Group-office with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.1
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10080
Weakness: CWE-79
Affected product: Intermesh Group-office
Published: 2026-03-06
Last modified: 2026-06-17

Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.155, 25.0.88, and 26.0.10, there is a reflected XSS vulnerability in GroupOffice on the external/index flow. The f parameter (Base64 JSON) is decoded and then injected into an inline JavaScript block without strict escaping, allowing </script><script>...</script> injection and arbitrary JavaScript execution in the victim's browser. This issue has been patched in versions 6.8.155, 25.0.88, and 26.0.10.

Frequently asked questions

What is CVE-2026-30238?: Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.155, 25.0.88, and 26.0.10, there is a reflected XSS vulnerability in GroupOffice on the external/index flow. The f parameter (Base64 JSON) is decoded and then injected into an inline JavaScript block without strict escaping, allowing </script><script>...</script> injection and arbitrary JavaScript execution in the victim's browser. This issue has been patched in versions 6.8.155, 25.0.88, and 26.0.10.
How severe is CVE-2026-30238?: CVE-2026-30238 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-30238 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30238?: CVE-2026-30238 affects Intermesh Group-office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30238?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30238 have an EU (EUVD) identifier?: Yes. CVE-2026-30238 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10080.
When was CVE-2026-30238 published?: CVE-2026-30238 was published on 2026-03-06 and last updated on 2026-06-17.

References

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-7p2f-c33m-rv5v

Affected products (1)

cpe:2.3:a:intermesh:group-office:*:*:*:*:*:*:*:*

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