CVE-2019-15623 json
Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's domain and user IDs to the Nextcloud Lookup Serve…
published 2020-02-04 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6580
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled.
Patch / fix
- nextcloud nextcloud_server 14.0.13, 15.0.9, 16.0.2
- nextcloud Package Hub 15 SP1 15.0.14-bp151.3.6.1
- nextcloud Package Hub 15 SP1, Package Hub 15, Package Hub 12 +1 more 15.0.14-bp151.3.3.1
opensuse advisories openSUSE-SU-2020:0229-1openSUSE-SU-2020:0220-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2019-15623 updated
nextcloud: Several CVEs fixed in nextcloud 15, 16 and 17
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
1.92% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/508490 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- n/a Nextcloud Server
Classification
- Weakness
-
- CWE-359 Exposure of Private Personal Information to an Unauthorized Actor
References
-
hackerone.com
/reports/508490
exploit, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2020-02/msg00019.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2020-02/msg00022.html
vendor-advisory, third-party-advisory
-
nextcloud.com
/security/advisory/?id=NC-SA-2019-016
third-party-advisory, vendor-advisory
Sources
- CVE List CVE-2019-15623
- NVD CVE-2019-15623
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.