How severe is CVE-2020-10098?

CVE-2020-10098 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-10098 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10098?

CVE-2020-10098 affects Zammad. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-10098?

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

When was CVE-2020-10098 published?

CVE-2020-10098 was published on 2020-03-05 and last updated on 2026-06-17.

CVE-2020-10098

CVE-2020-10098 is a medium-severity vulnerability in Zammad with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Zammad
Published: 2020-03-05
Last modified: 2026-06-17

Description

An XSS issue was discovered in Zammad 3.0 through 3.2. Malicious code can be provided by a low-privileged user through the Email functionality. The malicious JavaScript will execute within the browser of any user who opens the Ticket with the Article created from that Email.

Frequently asked questions

What is CVE-2020-10098?: An XSS issue was discovered in Zammad 3.0 through 3.2. Malicious code can be provided by a low-privileged user through the Email functionality. The malicious JavaScript will execute within the browser of any user who opens the Ticket with the Article created from that Email.
How severe is CVE-2020-10098?: CVE-2020-10098 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-10098 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10098?: CVE-2020-10098 affects Zammad. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-10098?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-10098 published?: CVE-2020-10098 was published on 2020-03-05 and last updated on 2026-06-17.

References

https://zammad.com/news/security-advisory-zaa-2020-03

Affected products (1)

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

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