How severe is CVE-2017-9339?

CVE-2017-9339 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-2017-9339 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-2017-9339?

CVE-2017-9339 affects Owncloud. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9339?

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

When was CVE-2017-9339 published?

CVE-2017-9339 was published on 2017-07-17 and last updated on 2026-06-17.

CVE-2017-9339

CVE-2017-9339 is a medium-severity vulnerability in Owncloud 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.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Owncloud
Published: 2017-07-17
Last modified: 2026-06-17

Description

A logical error in ownCloud Server before 10.0.2 caused disclosure of valid share tokens for public calendars. Thus granting an attacker potentially access to publicly shared calendars without knowing the share token.

Frequently asked questions

What is CVE-2017-9339?: A logical error in ownCloud Server before 10.0.2 caused disclosure of valid share tokens for public calendars. Thus granting an attacker potentially access to publicly shared calendars without knowing the share token.
How severe is CVE-2017-9339?: CVE-2017-9339 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-2017-9339 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-2017-9339?: CVE-2017-9339 affects Owncloud. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9339?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-9339 published?: CVE-2017-9339 was published on 2017-07-17 and last updated on 2026-06-17.

References

https://owncloud.org/security/advisory/?id=oc-sa-2017-005

Affected products (1)

cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:*

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