How severe is CVE-2026-34248?

CVE-2026-34248 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-34248 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34248?

CVE-2026-34248 affects Zammad. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34248?

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

Does CVE-2026-34248 have an EU (EUVD) identifier?

Yes. CVE-2026-34248 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20556.

When was CVE-2026-34248 published?

CVE-2026-34248 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-34248

CVE-2026-34248 is a medium-severity vulnerability in Zammad with a CVSS 3.x base score of 5.7. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
CVSS v4: 2.1
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20556
Weakness: CWE-284
Affected product: Zammad
Published: 2026-04-08
Last modified: 2026-06-17

Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1, customers in shared organizations (means they can see each other's tickets) could see fields which are not intended for customers - including fields not intended for them at all (e.g. priority, custom ticket attributes for internal purposes). This was the case when a customer opened a ticket from another user of the same shared organization. They are not able to modify these field. This vulnerability is fixed in 7.0.1.

Frequently asked questions

What is CVE-2026-34248?: Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1, customers in shared organizations (means they can see each other's tickets) could see fields which are not intended for customers - including fields not intended for them at all (e.g. priority, custom ticket attributes for internal purposes). This was the case when a customer opened a ticket from another user of the same shared organization. They are not able to modify these field. This vulnerability is fixed in 7.0.1.
How severe is CVE-2026-34248?: CVE-2026-34248 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-34248 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34248?: CVE-2026-34248 affects Zammad. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34248?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34248 have an EU (EUVD) identifier?: Yes. CVE-2026-34248 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20556.
When was CVE-2026-34248 published?: CVE-2026-34248 was published on 2026-04-08 and last updated on 2026-06-17.

References

https://github.com/zammad/zammad/security/advisories/GHSA-prww-84vh-w978

Affected products (1)

cpe:2.3:a:zammad:zammad:7.0.0:*:*:*:*:*:*:*

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