CVE-2026-6042CWE-404CWE-407

musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic complexity

Medium · published April 10, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
4.8
In the wild
Unconfirmed
What it is

A security flaw has been discovered in musl libc up to 1.2.6. Affected is the function iconv of the file src/locale/iconv.c of the component GB18030 4-byte Decoder. Performing a manipulation results in inefficient algorithmic complexity. The attack must be initiated from a local position. To fix this issue, it is recommended to deploy a patch.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X
EPSS
0.00160 · 4.8th percentile
Weaknesses
CWE-404 · Improper Resource Shutdown or Release; CWE-407 · Inefficient Algorithmic Complexity
Published
2026-04-10T09:00Z
EPSS history
Timeline
  • 10 APR 09:00Z
    musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic complexity
    cvelistv5