CVE-2026-16729
- Source
- https://cve.org/CVERecord?id=CVE-2026-16729
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16729.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-16729
- Aliases
-
- GHSA-v3r7-h72x-cjcm
- Downstream
- Published
- 2026-07-29T16:45:57.001Z
- Modified
- 2026-08-01T03:46:01.943958853Z
- Severity
-
- 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields
- Details
-
undici's setCookie function does not fully sanitize cookie attributes. In undici before 6.28.0, from 7.0.0 up to before 7.29.0, and from 8.0.0 up to before 8.9.0, a domain value is not checked for semicolons and entries in the unparsed array are not sanitized, so attacker-influenced input can inject additional cookie attributes. For example, a domain value containing a semicolon can append attributes such as SameSite, and an unparsed entry can inject attributes such as HttpOnly, without the caller setting them. Applications that pass user-controlled input to these fields, such as multi-tenant or reverse-proxy servers that scope session cookies to a tenant-supplied domain, can have SameSite CSRF protections bypassed, or the Secure, HttpOnly, and SameSite attributes forced, stripped, or overridden. The issue is fixed in undici 6.28.0, 7.29.0, and 8.9.0.
- Database specific
{ "cwe_ids": [ "CWE-74" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16729.json", "cna_assigner": "openjs" }- References
Affected packages
Git / github.com/nodejs/undici
Affected ranges
- Type
- GIT
- Repo
- https://github.com/nodejs/undici
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixedIntroducedFixed
- Database specific
{ "source": "AFFECTED_FIELD", "extracted_events": [ { "introduced": "0" }, { "fixed": "6.28.0" }, { "introduced": "7.0.0" }, { "fixed": "7.29.0" }, { "introduced": "8.0.0" }, { "fixed": "8.9.0" } ] }