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CVE-2024-56734

18
FAUCET Score

CVE-2024-56734 is an open redirect vulnerability in the Better Auth TypeScript library, affecting all versions prior to 1.1.6. It allows attackers to redirect users to arbitrary malicious websites via a manipulated callbackURL parameter in email verification links, bypassing origin validation. Rated 6.1 MEDIUM, this vulnerability requires user interaction (UI:R) but has low attack complexity (AC:L), potentially leading to limited confidentiality and integrity impacts (C:L/I:L). There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.6CPE matchmatch criteria
cpe:2.3:a:better-auth:better_auth:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 4.0

7.9HIGH

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 33rd percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: better-authFixed in: 1.1.6

Vendor Advisories (1)

npmGHSA-8jhw-6pjj-8723high

Better Auth has an Open Redirect Vulnerability in Verify Email Endpoint

Dec 30, 2024

References

github.com / better-auth/better-auth/commit/deb3d73aea90d0468d92723f4511542b593e522f
Patch
github.com / better-auth/better-auth/security/advisories/GHSA-8jhw-6pjj-8723
ExploitMitigationVendor Advisory