How severe is CVE-2020-10096?

CVE-2020-10096 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-10096 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10096?

CVE-2020-10096 affects Zammad. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-10096?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-10096 published?

CVE-2020-10096 was published on 2020-03-05 and last updated on 2026-06-17.

CVE-2020-10096

CVE-2020-10096 is a high-severity vulnerability in Zammad with a CVSS 3.x base score of 7.5. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
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 does not prevent caching of confidential data within browser memory. An attacker who either remotely compromises or obtains physical access to a user's workstation can browse the browser cache contents and obtain sensitive information. The attacker does not need to be authenticated with the application to view this information, as it would be available via the browser cache.

Frequently asked questions

What is CVE-2020-10096?: An issue was discovered in Zammad 3.0 through 3.2. It does not prevent caching of confidential data within browser memory. An attacker who either remotely compromises or obtains physical access to a user's workstation can browse the browser cache contents and obtain sensitive information. The attacker does not need to be authenticated with the application to view this information, as it would be available via the browser cache.
How severe is CVE-2020-10096?: CVE-2020-10096 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-10096 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10096?: CVE-2020-10096 affects Zammad. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-10096?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-10096 published?: CVE-2020-10096 was published on 2020-03-05 and last updated on 2026-06-17.

References

https://zammad.com/news/security-advisory-zaa-2020-11

Affected products (1)

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

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