CVE-2024-56734Network attack vector

Open redirect via unchecked email callback URL

Published Dec 30, 2024 · Updated Dec 30, 2024

Open redirect in Better Auth before 1.1.6 allows remote attackers to send users to attacker-controlled sites via verification links. The verify-email handler redirects to its callbackURL after JWT verification, while origin-check middleware skips GET requests. A recipient must follow a crafted email-verification link; the redirect supports phishing but does not directly alter the application.

CVSS severity7.9
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Better Auth before 1.1.6 allows remote attackers to send users to attacker-controlled sites via verification links. The verify-email handler redirects to its callbackURL after JWT verification, while origin-check middleware skips GET requests. A recipient must follow a crafted email-verification link; the redirect supports phishing but does not directly alter the application.

The record

CVE
CVE-2024-56734
Published
Dec 30, 2024
Updated
Dec 30, 2024
Vendor
Better Auth
Product
Better Auth
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2024Record 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=< 1.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Better Auth · Better Authversion=< 1.1.5

Published CVSS scores

7.9GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001Malicious Link

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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