SARA / Free Tools / CVE / CVE-2023-39959

CVE-2023-39959 — Nextcloud Server provides data storage for Nextcloud, an open source cloud platf

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given iden

CVSS
3.5 LOW
EPSS
66.00% (top 29.20%)
CWE
CWE-284
Published
2023-08-10T17:07:42.367Z
Last modified
2024-10-08T14:11:04.848Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

01What is this vulnerability?

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server…

02Affected products

VendorProductVersions
nextcloudsecurityadvisories — >= 25.0.0, < 25.0.9, >= 26.0.0, < 26.0.4, >= 27.0.0, < 27.0.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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