What’s Vulnerable › Vulnerabilities

CVE-2021-39157: Improper Handling of Exceptional Conditions in detect-character-encoding

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-24 · updated 2026-06-17
• Weakness: CWE-755

Description

detect-character-encoding is an open source character encoding inspection library. In detect-character-encoding v0.6.0 and earlier, data matching no charset causes the Node.js process to crash. The problem has been patched in [detect-character-encoding v0.7.0](https://github.com/sonicdoe/detect-character-encoding/releases/tag/v0.7.0). No workaround are available and all users should update to resolve this issue.

Affected products

• sonicdoe detect-character-encoding: before 0.7.0 — fixed in 0.7.0

How to fix

Upgrade to a fixed version: sonicdoe detect-character-encoding 0.7.0. Check the vendor advisory for mitigations.

References

• https://github.com/sonicdoe/detect-character-encoding/commit/992a11007fff6cfd40b952150ab8d30410c4a20a
• https://github.com/sonicdoe/detect-character-encoding/issues/15
• https://github.com/sonicdoe/detect-character-encoding/security/advisories/GHSA-jqfh-8hw5-fqjr
• https://github.com/sonicdoe/detect-character-encoding/commit/992a11007fff6cfd40b952150ab8d30410c4a20a
• https://github.com/sonicdoe/detect-character-encoding/issues/15
• https://github.com/sonicdoe/detect-character-encoding/security/advisories/GHSA-jqfh-8hw5-fqjr

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