CVE-2026-126348
- Source
- https://cve.org/CVERecord?id=CVE-2026-126348
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126348.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-126348
- Aliases
- Downstream
- Published
- 2026-11-12T21:57:55Z
- Modified
- 2026-11-13T10:46:43Z
- Severity
-
- 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- Addressable display_uri can show misleading hosts with invalid Punycode A-labels
- Details
-
Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. From 2.0.0 until 2.9.1, the pure-Ruby Addressable::IDNA.to_unicode implementation decodes invalid Punycode A-labels instead of returning them unchanged. Labels that decode to ASCII text or fail to convert back to the same A-label can therefore make Addressable::URI#display_uri show a trusted-looking host while host, normalized_host, and the connection target retain the attacker-controlled encoded host. A trusted-name comparison using Addressable::IDNA.to_unicode output can also treat two different hosts as the same without displaying the URI. The native libidn implementation, to_ascii, and normalized_host are unaffected. This issue is fixed in version 2.9.1.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-1007", "CWE-20" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126348.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126348.json
- https://github.com/sporkmonger/addressable/commit/b8a59cc0e03f8704f1d7c8122fc8f7ef8548362d
- https://github.com/sporkmonger/addressable/releases/tag/addressable-2.9.1
- https://github.com/sporkmonger/addressable/security/advisories/GHSA-9crm-g4mf-wc5j
- https://nvd.nist.gov/vuln/detail/CVE-2026-126348
Affected packages
Git / github.com/sporkmonger/addressable
Affected ranges
- Type
- GIT
- Repo
- https://github.com/sporkmonger/addressable
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "2.0.0" }, { "fixed": "2.9.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "b8a59cc0e03f8704f1d7c8122fc8f7ef8548362d" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "addressable-2.9.1", "range": [ { "fixed": "afa66636d9fdcca11e03c85cf166651e0efa68ef" } ], "source": "REFERENCES_TAG" } ] }