CVE-2026-27803

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.30% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 22.9% of scored records. A rank, not a probability.

NVD base score

8.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-04 21:40Z7 MO AGO

Last updated

2026-03-05 15:42Z7 MO AGO

Reserved

2026-02-24

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Weaknesses

• CWE-269Improper Privilege ManagementClass
• CWE-285Improper AuthorizationClass
• CWE-863Incorrect AuthorizationClass
• CWE-266Incorrect Privilege AssignmentBase

Data version

5.2

Document digest

d812b4666d1bac3a87222edad6b1bdc41a49aa60596845592043a01eb6f76c66

• github.comhttps://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-h4hq-rgvh-wh27x_refsource_CONFIRM