How severe is CVE-2026-27802?

CVE-2026-27802 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-27802 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27802?

CVE-2026-27802 affects Dani-garcia Vaultwarden. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27802?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-27802 have an EU (EUVD) identifier?

Yes. CVE-2026-27802 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9502.

When was CVE-2026-27802 published?

CVE-2026-27802 was published on 2026-03-04 and last updated on 2026-06-17.

CVE-2026-27802

CVE-2026-27802 is a high-severity vulnerability in Dani-garcia Vaultwarden with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9502
Weakness: CWE-269
Affected product: Dani-garcia Vaultwarden
Published: 2026-03-04
Last modified: 2026-06-17

Description

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, there is a privilege escalation vulnerability via bulk permission update to unauthorized collections by Manager. This issue has been patched in version 1.35.4.

Frequently asked questions

What is CVE-2026-27802?: Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, there is a privilege escalation vulnerability via bulk permission update to unauthorized collections by Manager. This issue has been patched in version 1.35.4.
How severe is CVE-2026-27802?: CVE-2026-27802 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-27802 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27802?: CVE-2026-27802 affects Dani-garcia Vaultwarden. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27802?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-27802 have an EU (EUVD) identifier?: Yes. CVE-2026-27802 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9502.
When was CVE-2026-27802 published?: CVE-2026-27802 was published on 2026-03-04 and last updated on 2026-06-17.

References

https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-r32r-j5jq-3w4m

Affected products (1)

cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*

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