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THREATINT
PUBLISHED

CVE-2025-27611

base-x homograph attack allows Unicode lookalike characters to bypass validation.



Description

base-x is a base encoder and decoder of any given alphabet using bitcoin style leading zero compression. Versions 4.0.0, 5.0.0, and all prior to 3.0.11, are vulnerable to attackers potentially deceiving users into sending funds to an unintended address. This issue has been patched in versions 3.0.11, 4.0.1, and 5.0.1.

Reserved 2025-03-03 | Published 2025-04-30 | Updated 2025-05-01 | Assigner GitHub_M


HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-1007: Insufficient Visual Distinction of Homoglyphs Presented to User

Product status

= 5.0.0
affected

= 4.0.0
affected

< 3.0.11
affected

References

github.com/...base-x/security/advisories/GHSA-xq7p-g2vc-g82p

github.com/cryptocoinjs/base-x/pull/86

cve.org (CVE-2025-27611)

nvd.nist.gov (CVE-2025-27611)

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