{"id":"CVE-2026-91841","state":"PUBLISHED","title":"Networkmanager-vpnc: networkmanager-vpnc: incomplete fix for cve-2018-10900 allows root privilege escalation via ca-file path newline injection","description":"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.","publishedAt":"2026-09-25T17:56:34.223Z","updatedAt":"2026-09-28T12:43:47.658Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"fedora"},"assigner":"fedora","products":["GNOME NetworkManager-vpnc"],"affected":[{"vendor":"GNOME","product":"NetworkManager-vpnc","packageName":"network-manager-vpnc","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"semver"}],"collectionURL":"https://gitlab.gnome.org/GNOME/NetworkManager-vpnc"}],"references":["https://access.redhat.com/security/cve/CVE-2026-91841","https://bugzilla.redhat.com/show_bug.cgi?id=2533651","https://gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/20"],"weaknesses":["CWE-93"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/91xxx/CVE-2026-91841.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-91841","state":"PUBLISHED","datePublished":"2026-09-25T17:56:34.223Z","dateUpdated":"2026-09-28T12:43:47.658Z","assignerShortName":"fedora","assignerOrgId":"92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5","dateReserved":"2026-09-15T08:28:01.333Z"},"containers":{"cna":{"title":"Networkmanager-vpnc: networkmanager-vpnc: incomplete fix for cve-2018-10900 allows root privilege escalation via ca-file path newline injection","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"GNOME","product":"NetworkManager-vpnc","packageName":"network-manager-vpnc","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"semver"}],"collectionURL":"https://gitlab.gnome.org/GNOME/NetworkManager-vpnc"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91841","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533651","name":"RHBZ#2533651","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/20"}],"metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-93","description":"Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"fedora","orgId":"92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5","dateUpdated":"2026-09-25T17:56:34.223Z"},"datePublic":"2026-09-15T09:55:49.970Z","x_redhatCweChain":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","workarounds":[{"lang":"en","value":"To mitigate this issue, remove the `NetworkManager-vpnc` package if the vpnc VPN plugin functionality is not required on the system. This will prevent a local unprivileged user from exploiting the flaw.\nTo remove the package, use the following command:\n`sudo dnf remove NetworkManager-vpnc`\nNote that removing this package will disable the ability to use vpnc-based VPN connections."}],"timeline":[{"lang":"en","time":"2026-09-15T09:55:49.970Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-09-15T09:55:49.970Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Andreas Gabriel Berbescu for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/20","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-26T03:55:52.659097Z","id":"CVE-2026-91841","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-28T12:43:47.658Z"}}]}}}