CVE-2024-39924Network attack vector

Vault takeover via unchecked emergency-access metadata update

Published Sep 13, 2024 · Updated Mar 18, 2025

Authorization bypass in Vaultwarden 1.30.3 allows remote authenticated users with emergency access to take over another user's vault. The PUT /api/emergency-access/<access_UUID> handler updates the access type and wait period without verifying that the requester is the grantor. A designated grantee can obtain the UUID from the notification email, upgrade read-only access to takeover, and bypass the configured delay.

CVSS severity8.8
High
EPSS probability13.33%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Vaultwarden 1.30.3 allows remote authenticated users with emergency access to take over another user's vault. The PUT /api/emergency-access/<access_UUID> handler updates the access type and wait period without verifying that the requester is the grantor. A designated grantee can obtain the UUID from the notification email, upgrade read-only access to takeover, and bypass the configured delay.

The record

CVE
CVE-2024-39924
Published
Sep 13, 2024
Updated
Mar 18, 2025
Vendor
Dani Garcia
Product
Vaultwarden
Classifications
CWE-276, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.30.3.a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dani Garcia · Vaultwardenversion=1.30.3.a

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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