Home/CVE/base-x is a base encoder and decoder of any given alphabet using bitcoin style leading zero compression. Versions 4.0.0,
CVE

CVE-2025-27611

base-x is a base encoder and decoder of any given alphabet using bitcoin style leading zero compression. Versions 4.0.0,

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.

EPSS 0.00377
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
npm base-x HIGH fixed in 5.0.1
▣

Scoring & Timeline

Published to NVD30 Apr 2025 · 08:15 PM
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

3
rhsaRHSA-2025:10453Important
rhsaRHSA-2025:10452Important
rhsaRHSA-2025:10459Important
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/cryptocoinjs/base-x/pull/86
https://github.com/cryptocoinjs/base-x/security/advisories/GHSA-xq7p-g2vc-g82p
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