Low 3.3Published Apr 10, 2026

CVE-2026-6042musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic complexity

Updated under an hour ago (Oct 27, 2026, 6:23 AM ET)

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Every CVE for musl libc

Exploited in the last 30 days

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.

CVSS: 3.3 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
Weakness (CWE): CWE-407, CWE-404
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Apr 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

musl libc musl:libc (from the name)	1.2.0; 1.2.1; 1.2.2; 1.2.3; 1.2.4; 1.2.5; 1.2.6	CNA record

References

References

https://vuldb.com/vuln/356620	vdb-entry, technical-description
https://vuldb.com/vuln/356620/cti	signature, permissions-required
https://vuldb.com/submit/796352	third-party-advisory
https://www.openwall.com/lists/oss-security/2026/04/02/10	related
https://www.openwall.com/lists/oss-security/2026/04/03/2	patch
http://www.openwall.com/lists/oss-security/2026/04/09/19

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.