Search/CVE-2026-43638
● CVE — Medium

CVE-2026-43638

VendorbitwardenProductserverDiscoveredMay 11, 2026UpdatedOct 26, 2026

Bitwarden Server prior to v2026.4.1 contains a missing authorization vulnerability that allows any authenticated user to write ciphers into an arbitrary organization via POST /ciphers/import-organization by submitting an empty collections array, which causes the server-side permission check to be skipped.

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CVSS v3.1
5.4 MEDIUM
EPSS
0.19%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 26, 2026
● 0.00pp
0.19% → 0.19% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
ConfidentialityLOW
IntegrityLOW
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Connections
2 relationships
Timeline
disclosure → media coverage
May 11, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026