CVE-2021-42089
CVE-2021-42089 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% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-200
- Affected product: Zammad
- Published:
- Last modified:
Description
An issue was discovered in Zammad before 4.1.1. The REST API discloses sensitive information.
Frequently asked questions
- What is CVE-2021-42089?
- An issue was discovered in Zammad before 4.1.1. The REST API discloses sensitive information.
- How severe is CVE-2021-42089?
- CVE-2021-42089 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-2021-42089 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-42089?
- CVE-2021-42089 affects Zammad. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-42089?
- 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-2021-42089 published?
- CVE-2021-42089 was published on 2021-10-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*
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