CVE-2021-32802

highPriorität · verfolgen · 40EPSS 0.026 · 85. PerzentilEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.60% (85th) EPSS

CVSS 10 · high

Is it mine?

6 products

Prüfe deine Angriffsfläche

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · bewertet 2026-10-27

Nextcloud server is an open source, self hosted personal cloud. Nextcloud supports rendering image previews for user provided file content. For some image types, the Nextcloud server was invoking a third-party library that wasn't suited for untrusted user-supplied content. There are several security concerns with passing user-generated content to this library, such as Server-Side-Request-Forgery, file disclosure or potentially executing code on the system. The risk depends on your system configuration and the installed library version. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. These versions do not use this library anymore. As a workaround users may disable previews by setting `enable_previews` to `false` in `config.php`.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

10.0

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 5.9

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Lsecondary · ENISA EU

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Lsecondary · security-advisories@github.comAusnutzbarkeit 3.9 · Auswirkung 4.7

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-829USprimär

betroffene Produkte (6)

Betroffene Produkte und Versionsbereiche.

nextcloud security-advisories≤ < 20.0.12enisa_euvdEU
nextcloud security-advisories21.0.0, → 21.0.4enisa_euvdEU
nextcloud security-advisories22.0.0, → 22.1.0enisa_euvdEU
nextcloud nextcloud server< 20.0.12nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server21.0.0 → 21.0.4nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server22.0.0 → 22.1.0nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

auch bekannt als (2)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

veröffentlicht 2021-09-07geändert 2026-06-17

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+455 weitere

Referenzen (14)

Externe Belege — Patches, Meldungen, Analysen.

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