What is CVE-2026-91841?

CVE-2026-91841 is a high-severity vulnerability, classified under CRLF Injection. CVSS score: 7.8/10. Published 2026-09-25.

How severe is CVE-2026-91841?

High severity. CVSS v3 base score is 7.8 out of 10.

CVE-2026-91841

CVE-2026-91841

A flaw was found in NetworkManager-vpnc, a VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by injecting a newline character into the CA-File path. This manipulation allows the user to execute arbitrary commands as the root user, leading to local privilege escalation.

Vulnerability class: CRLF Injection

Published 2026-09-25 · last modified 2026-09-26.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-93 — CRLF Injection

References

access.redhat.com/security/cve/CVE-2026-91841 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)
gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/20

Frequently asked questions

What is CVE-2026-91841?: CVE-2026-91841 is a high-severity vulnerability, classified under CRLF Injection. CVSS score: 7.8/10. Published 2026-09-25.
How severe is CVE-2026-91841?: High severity. CVSS v3 base score is 7.8 out of 10.