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CVE-2021-39176

Missing Release of Memory after Effective Lifetime in detect-character-encoding

HIGH
7.5
CVSS Score
Published: August 31, 2021 at 06:05 PM UTC
Updated: June 17, 2026 at 04:03 AM UTC
2 products affected across 2 vendorsDetect Character EncodingCharacter Encoding Project Detect Character Encoding

Using detect-character-encoding by sonicdoe?

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

detect-character-encoding is a package for detecting character encoding using ICU. In detect-character-encoding v0.3.0 and earlier, allocated memory is not released. The problem has been patched in detect-character-encoding v0.3.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Detect Character Encoding· Detect Character Encoding Projectnpm
95%
v < 0.3.1
Affected range stops below 0.3.1, so it looks safe — our inference, not a vendor statement
Character Encoding Project Detect Character Encoding· Sonicdoe
60%
v < 0.3.1
Affected range stops below 0.3.1, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/sonicdoe/detect-character-encoding/commit/d44356927b92e3b13e178071bf6d7c671766f588
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/sonicdoe/detect-character-encoding/pull/6
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/sonicdoe/detect-character-encoding/releases/tag/v0.3.1
x_refsource_CONFIRMExploitPatchThird Party Advisory
Source: [email protected]
https://github.com/sonicdoe/detect-character-encoding/security/advisories/GHSA-5rwj-j5m3-3chj

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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