CVE-2026-57520: bitwarden server

Bitwarden Server < 2026.5.0 Privilege Escalation via Bulk User Remove Endpoint

CVSS 7.1 HighEPSS 0.0064 · 50th percentile

Published by the CVE Program (CNA: VulnCheck) at 25 Jun 2026, 19:08 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
bitwarden	server pkg:github/bitwarden/server	affected before 2026.5.0 semver Other versions: affected

Identifiers

CVE-2026-57520

CNA

VulnCheck

Weakness (CWE)

CWE-862

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.1	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
7.1	High	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0064, the 50th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

25 Jun 2026, 19:08 UTC Confirmed by the CVE List

Sources

References from the CNA

github.com/bitwarden/server/releases/tag/v2026.5.0 release-notes
github.com/bitwarden/server/pull/7526 issue-trackingpatch
github.com/bitwarden/server/commit/901bb67157c0f80d369c40b76742fdf7623da4e4 patch
www.vulncheck.com/advisories/bitwarden-server-privilege-escalation-via-bulk-user-remove-endpoint third-party-advisory
sanjokkarki.com.np/blog/bitwarden-bulk-remove-admin technical-descriptionexploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.