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No exploitation reportedFix available

CVE-2021-39157

No exploitation reported by the sources we read.

  • Published2021-08-24
  • Fixed in0.7.0
  • WeaknessCWE-755

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-08-2419:15CVE publishedNVD

Versions per branch

NVD · OSV
Detect-character-encoding project detect-character-encoding
BranchAffectedFixed in
0.7< 0.7.00.7.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Detect-character-encoding project detect-character-encoding to 0.7.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.17.5known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-755known since 2026-10-23
  • NVDweakness (CWE)CWE-755read 2026-10-23
  • FIRST EPSSEPSS score2.1 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2021-08-24

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2021-08-24
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-jqfh-8hw5-fqjr

Frequently asked questions

What is CVE-2021-39157?

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.

Is CVE-2021-39157 actively exploited?

Active exploitation of CVE-2021-39157 has not been confirmed. Its EPSS score was 2.1% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-39157?

CVE-2021-39157 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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