How severe is CVE-2019-25368?

CVE-2019-25368 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-25368 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-25368?

CVE-2019-25368 affects Opnsense. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-25368?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2019-25368 have an EU (EUVD) identifier?

Yes. CVE-2019-25368 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19410.

When was CVE-2019-25368 published?

CVE-2019-25368 was published on 2026-02-15 and last updated on 2026-06-17.

CVE-2019-25368

CVE-2019-25368 is a medium-severity vulnerability in Opnsense with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 4.8
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2019-19410
Weakness: CWE-79
Affected product: Opnsense
Published: 2026-02-15
Last modified: 2026-06-17

Description

OPNsense 19.1 contains multiple cross-site scripting vulnerabilities in the diag_backup.php endpoint that allow attackers to inject malicious scripts through multiple parameters including GDrive_GDriveEmail, GDrive_GDriveFolderID, GDrive_GDriveBackupCount, Nextcloud_url, Nextcloud_user, Nextcloud_password, Nextcloud_password_encryption, and Nextcloud_backupdir. Attackers can submit POST requests with script payloads in these parameters to execute arbitrary JavaScript in the context of authenticated administrator sessions.

Frequently asked questions

What is CVE-2019-25368?: OPNsense 19.1 contains multiple cross-site scripting vulnerabilities in the diag_backup.php endpoint that allow attackers to inject malicious scripts through multiple parameters including GDrive_GDriveEmail, GDrive_GDriveFolderID, GDrive_GDriveBackupCount, Nextcloud_url, Nextcloud_user, Nextcloud_password, Nextcloud_password_encryption, and Nextcloud_backupdir. Attackers can submit POST requests with script payloads in these parameters to execute arbitrary JavaScript in the context of authenticated administrator sessions.
How severe is CVE-2019-25368?: CVE-2019-25368 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-25368 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-25368?: CVE-2019-25368 affects Opnsense. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-25368?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2019-25368 have an EU (EUVD) identifier?: Yes. CVE-2019-25368 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19410.
When was CVE-2019-25368 published?: CVE-2019-25368 was published on 2026-02-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opnsense:opnsense:19.1:*:*:*:*:*:*:*

More vulnerabilities in Opnsense

CVE-2023-27152 — Critical (CVSS 9.8): DECISO OPNsense 23.1 does not impose rate limits for authentication, allowing attackers to perform a brute-force attack…
CVE-2023-39008 — Critical (CVSS 9.8): A command injection vulnerability in the component /api/cron/settings/setJob/ of OPNsense Community Edition before 23.7…
CVE-2023-39004 — Critical (CVSS 9.8): Insecure permissions in the configuration directory (/conf/) of OPNsense Community Edition before 23.7 and Business…
CVE-2023-39001 — Critical (CVSS 9.8): A command injection vulnerability in the component diag_backup.php of OPNsense Community Edition before 23.7 and…
CVE-2023-39007 — Critical (CVSS 9.6): /ui/cron/item/open in the Cron component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2…
CVE-2026-45158 — Critical (CVSS 9.1): OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the…

All CVEs affecting Opnsense →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →