CVE-2026-45157

mediumpriority · track · 0EPSS 0.002 · 14 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.23% (14th) EPSS
CVSS 6.3 · medium
Is it mine?
48 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a malicious user has access to a file share of a user, they could use this share token to also access the chunking upload directly and see temporary part files during on going uploads. It is recommended that the Nextcloud Server is upgraded to 32.0.9 or 33.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 26.0.13.26, 27.1.11.25, 28.0.14.17, 29.0.16.16, 30.0.17.9, 31.0.14.5, 32.0.9 or 33.0.3

01

cvss

Technical severity, 0–10. One row per scoring source.

6.3
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:Nsecondary · ENISA EU
v3.16.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:Nsecondary · security-advisories@github.comexploitability 2.1 · impact 4.2
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284US
04

affected products (48)

Products and version ranges known to be affected.

showing 20 of 48
05

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-1471Nextcloud: Mehrere SchwachstellenDeutsch2026-05-11csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen im Nextcloud Server und verschiedenen Apps ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, und um Dateien zu manipulieren.

  • BIT-nextcloud-2026-45157Nextcloud: Valid share tokens allow to access tempory upload files of share owner2026-07-12vendor · osvUS

    Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a malicious user has access to a file share of a user, they could use this share token to also access the chunking upload directly and see temporary part files during on going uploads. It is recommended that the Nextcloud Server is upgraded to 32.0.9 or 33.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 26.0.13.26, 27.1.11.25, 28.0.14.17, 29.0.16.16, 30.0.17.9, 31.0.14.5, 32.0.9 or 33.0.3

06

also known as (2)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundosvNVDCVE.orgMITRE
published 2026-06-01modified 2026-07-22
08

references (10)

External citations — patches, advisories, analysis.

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