CVE-2017-0891
CVE-2017-0891 is a medium-severity vulnerability in Nextcloud Nextcloud Server 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% (46th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Nextcloud Nextcloud Server
- Published:
- Last modified:
Description
Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are vulnerable to an inadequate escaping of error messages leading to XSS vulnerabilities in multiple components.
Frequently asked questions
- What is CVE-2017-0891?
- Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are vulnerable to an inadequate escaping of error messages leading to XSS vulnerabilities in multiple components.
- How severe is CVE-2017-0891?
- CVE-2017-0891 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-2017-0891 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-0891?
- CVE-2017-0891 affects Nextcloud Nextcloud Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-0891?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2017-0891 published?
- CVE-2017-0891 was published on 2017-05-08 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
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