How severe is CVE-2017-5866?

CVE-2017-5866 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2017-5866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5866?

CVE-2017-5866 primarily affects Owncloud. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-5866?

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

When was CVE-2017-5866 published?

CVE-2017-5866 was published on 2017-03-03 and last updated on 2026-06-17.

CVE-2017-5866

CVE-2017-5866 is a medium-severity vulnerability in Owncloud with a CVSS 3.x base score of 4.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Owncloud
Published: 2017-03-03
Last modified: 2026-06-17

Description

The autocomplete feature in the E-Mail share dialog in ownCloud Server before 8.1.11, 8.2.x before 8.2.9, 9.0.x before 9.0.7, and 9.1.x before 9.1.3 allows remote authenticated users to obtain sensitive information via unspecified vectors.

Frequently asked questions

What is CVE-2017-5866?: The autocomplete feature in the E-Mail share dialog in ownCloud Server before 8.1.11, 8.2.x before 8.2.9, 9.0.x before 9.0.7, and 9.1.x before 9.1.3 allows remote authenticated users to obtain sensitive information via unspecified vectors.
How severe is CVE-2017-5866?: CVE-2017-5866 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2017-5866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5866?: CVE-2017-5866 primarily affects Owncloud. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-5866?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-5866 published?: CVE-2017-5866 was published on 2017-03-03 and last updated on 2026-06-17.

References

Affected products (20)

cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.0:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.1:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.2:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.3:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.4:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.5:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.6:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.7:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:8.2.8:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.0.1:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.0.2:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.0.3:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.0.4:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.0.5:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.0.6:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.1.0:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.1.1:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud:9.1.2:*:*:*:*:*:*:*

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