CVE-2023-39959

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 versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
3.5 LOW
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
GitHub_MCNA
3.5 LOW
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 69%
VendorProductVersion
nextcloudnextcloud_server
25.0.0 ≤
𝑥
< 25.0.9
nextcloudnextcloud_server
25.0.0 ≤
𝑥
< 25.0.9
nextcloudnextcloud_server
26.0.0 ≤
𝑥
< 26.0.4
nextcloudnextcloud_server
26.0.0 ≤
𝑥
< 26.0.4
nextcloudnextcloud_server
27.0.0
nextcloudnextcloud_server
27.0.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj
https://github.com/nextcloud/server/pull/38747
https://hackerone.com/reports/1832126
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj
https://github.com/nextcloud/server/pull/38747
https://hackerone.com/reports/1832126