How severe is CVE-2020-10105?

CVE-2020-10105 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-10105 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10105?

CVE-2020-10105 affects Zammad. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-10105?

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

When was CVE-2020-10105 published?

CVE-2020-10105 was published on 2020-03-05 and last updated on 2026-06-17.

CVE-2020-10105

CVE-2020-10105 is a medium-severity vulnerability in Zammad with a CVSS 3.x base score of 5.3. 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-552.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-552
Affected product: Zammad
Published: 2020-03-05
Last modified: 2026-06-17

Description

An issue was discovered in Zammad 3.0 through 3.2. It returns source code of static resources when submitting an OPTIONS request, rather than a GET request. Disclosure of source code allows for an attacker to formulate more precise attacks. Source code was disclosed for the file 404.html (/zammad/public/404.html)

Frequently asked questions

What is CVE-2020-10105?: An issue was discovered in Zammad 3.0 through 3.2. It returns source code of static resources when submitting an OPTIONS request, rather than a GET request. Disclosure of source code allows for an attacker to formulate more precise attacks. Source code was disclosed for the file 404.html (/zammad/public/404.html)
How severe is CVE-2020-10105?: CVE-2020-10105 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-10105 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10105?: CVE-2020-10105 affects Zammad. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-10105?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-10105 published?: CVE-2020-10105 was published on 2020-03-05 and last updated on 2026-06-17.

References

https://zammad.com/news/security-advisory-zaa-2020-09

Affected products (1)

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

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