CVE-2023-38998
CVE-2023-38998 is a medium-severity vulnerability in Opnsense with a CVSS 3.x base score of 6.1. 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-601.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-601
- Affected product: Opnsense
- Published:
- Last modified:
Description
An open redirect in the Login page of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to redirect a victim user to an arbitrary web site via a crafted URL.
Frequently asked questions
- What is CVE-2023-38998?
- An open redirect in the Login page of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to redirect a victim user to an arbitrary web site via a crafted URL.
- How severe is CVE-2023-38998?
- CVE-2023-38998 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2023-38998 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-38998?
- CVE-2023-38998 affects Opnsense. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-38998?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-38998 published?
- CVE-2023-38998 was published on 2023-08-09 and last updated on 2026-06-17.
References
- https://github.com/opnsense/core/commit/6bc025af1705dcdd8ef22ff5d4fcb986fa4e45f8
- https://logicaltrust.net/blog/2023/08/opnsense.html
Affected products (1)
- cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*
More vulnerabilities in Opnsense
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- 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…
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- CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
- CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
- CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
- CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
- CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.