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

  - Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale     failure flag ends the Aho-Corasick prescan early in S_find_byclass. The prescan walks the subject for     positions where the full pattern could match, and the engine tries it from the leftmost one recorded. A     failing transition sets the failed flag, and a later successful transition does not clear it, so the     prescan reads the stale flag as a failure and stops before it can record a candidate that starts earlier.
    It takes a subject where one candidate is recorded and a later character then forces a fallback through a     fail link that succeeds. Example: ABCDE =~ m/ABCF|BCDE|C/; # matches C at offset 2, not BCDE ABCDE =~     m/ABCF|BCDE|C(G)/; # no match, BCDE missed An alternation like this can miss input it should match, or     match it on the wrong branch, so an access or filtering decision made from the result can be wrong.
    (CVE-2026-19487)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-19487

medium Nessus Plugin ID 335368

Version 1.6

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.6 Sep 17, 2026, 12:32 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202609171232
Version 1.5 Sep 9, 2026, 10:15 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202609091015
Version 1.4 Sep 6, 2026, 10:59 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202609062259
Version 1.3 Sep 2, 2026, 6:07 PM CVSS metrics ("CVSSv2 score" set to 5.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N") Detection (updated detection logic) Plugin metadata Plugin Feed: 202609021807
Version 1.2 Aug 15, 2026, 6:06 AM CVSS metrics ("CVSSv2 score" set to 6.4) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P") Detection (updated detection logic) Plugin metadata Plugin Feed: 202608150606
Version 1.1 Aug 14, 2026, 5:17 PM New Plugin Feed: 202608141717