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CVE-2026-6042

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e44b19a5aa6f9a248ba49b2ae3069c911eabd7ec0fa79a9183649f4eceff2889
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:ND/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"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","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

{"cweId":"CWE-407","description":"Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"modules":["GB18030 4-byte Decoder"],"product":"libc","vendor":"musl","versions":[{"status":"affected","version":"1.2.0"},{"status":"affected","version":"1.2.1"},{"status":"affected","version":"1.2.2"},{"status":"affected","version":"1.2.3"},{"status":"affected","version":"1.2.4"},{"status":"affected","version":"1.2.5"},{"status":"affected","version":"1.2.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:ND/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"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","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-407","description":"Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/04/09/19"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/adp/0/references/0
{"name":"Submit #796352 | musl libc musl 0.8.0 - 1.2.6 Inefficient Algorithmic Complexity","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/796352"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/references/2
{"name":"VDB-356620 | musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic complexity","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/356620"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/references/0
{"name":"VDB-356620 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/356620/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/references/1
{"tags":["related"],"url":"https://www.openwall.com/lists/oss-security/2026/04/02/10"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/references/3
{"tags":["patch"],"url":"https://www.openwall.com/lists/oss-security/2026/04/03/2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c6829cd0dba1bda2de1f22d7b44692049a9300de85e5ce5358003bc92aee249 · sha256:83855bdb334e25b9… · /containers/cna/references/4

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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