CVE-2020-10103

Name: CVE-2020-10103
Creator: NVD / NIST
Published: 2020-03-05T01:15:12.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2020-10103 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An XSS issue was discovered in Zammad 3.0 through 3.2. Malicious code can be provided by a low-privileged user through the File Upload functionality in Zammad. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

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 File Upload functionality in Zammad. The malicious JavaScript will execute within the browser of any user who opens a specially crafted link to the uploaded file with an active Zammad session.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.55%

41.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Zammad	Zammad	>= 1.0.0, <= 3.2.0

References

https://zammad.com/news/security-advisory-zaa-2020-02Patch, Vendor Advisory
https://zammad.com/news/security-advisory-zaa-2020-02Patch, Vendor Advisory

Timeline

Published: Mar 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10103?

How severe is CVE-2020-10103?

CVE-2020-10103 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10103?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10103?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST