CLEANSTART-2026-QZ52453

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Import Source
https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-QZ52453.json
JSON Data
https://api.osv.dev/v1/vulns/CLEANSTART-2026-QZ52453
Upstream
Published
2026-09-22T00:36:08Z
Modified
2026-09-22T01:45:03Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label
Details

CVE-2026-39821 affects multiple packages. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. See references for individual vulnerability details.

References

Affected packages

CleanStart / cortex

Package

Name
cortex

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.21.1-r8

Database specific

source
"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-QZ52453.json"

CleanStart / argo-cd

Package

Name
argo-cd

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.4.7-r3

Database specific

source
"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-QZ52453.json"