CVE-2025-27611

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

Published Apr 30, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2025-12752 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.
Github GHSA Github GHSA GHSA-xq7p-g2vc-g82p Homograph attack allows Unicode lookalike characters to bypass validation.
History
Type Values Removed Values Added
First Time appeared Redhat
Redhat jboss Enterprise Application Platform
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Vendors & Products Redhat
Redhat jboss Enterprise Application Platform
Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

threat_severity

Important

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title base-x homograph attack allows Unicode lookalike characters to bypass validation.
Weaknesses CWE-1007
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 1, 2025, 6:49 PM
Reserved
Mar 3, 2025, 3:10 PM
Status
Deferred
Published
Apr 30, 2025, 8:15 PM
Modified
Jun 17, 2026, 9:03 AM
Severity
Important
Public date
Apr 30, 2025, 7:36 PM