The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Impact: undici's cookie parser in parseSetCookie percent-decodes cookie values via qsUnescape, turning     encoded sequences like %0D%0A, %00, %3B, and %3D into their literal byte equivalents. RFC 6265 5.4 does     not specify any decoding and browsers do not decode either. Applications that parse a Set-Cookie header     and then forward the parsed value into a response header (proxies, middleware, SSR frameworks) become     vulnerable to HTTP response header injection: an attacker-controlled upstream can inject arbitrary Set-     Cookie, Location, or Cache-Control headers into the application's downstream response, enabling session     fixation, open redirect, or cache poisoning. Affected applications are those that use undici's cookie     parsing (parseSetCookie, parseCookie, getSetCookies) and forward the parsed cookie value into a response     header. This was introduced in undici 7.0.0 via PR #3789. Patches: Upgrade to undici v6.26.0, v7.28.0 or     v8.5.0. Workarounds: If upgrade is not immediately possible, do not forward values returned by     parseSetCookie/parseCookie/getSetCookies directly into response headers; sanitize the value first to strip     or reject CR, LF, NUL, ;, and = bytes. (CVE-2026-9679)

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Linux Distros Unpatched Vulnerability : CVE-2026-9679

medium Nessus Plugin ID 321572

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Jun 28, 2026, 2:21 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202606281421
Version 1.2 Jun 22, 2026, 8:21 AM CVSS metrics ("CVSSv3 score" set to 5.9) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N") Plugin Feed: 202606220821
Version 1.1 Jun 20, 2026, 11:15 AM New Plugin Feed: 202606201115