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CVE-2023-39007

36
FAUCET Score

CVE-2023-39007 is a critical cross-site scripting (XSS) vulnerability affecting the Cron component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2. This vulnerability, with a CVSS score of 9.6, allows unauthenticated attackers to inject malicious scripts via the 'openAction' parameter, leading to high impact on confidentiality, integrity, and availability. While not currently on the KEV catalog or showing active exploitation, a Nuclei template exists demonstrating a path from XSS to Remote Code Execution (RCE), indicating potential for future exploitation. Community discussion and media coverage for this CVE are currently minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 23.7CPE matchmatch criteria
cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.31%
Probability of exploitation in next 30 days
EPSS Percentile
81.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Nuclei: CVE-2023-39007 · Sep 11, 2023
This CVE's current EPSS score of 0.0232 is in the 85th percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / opnsense/core/commit/5edff49db1cd8b5078611e2f542d91c02af2b25c
Patch
github.com / opnsense/core/compare/23.1.11...23.7
logicaltrust.net / blog/2023/08/opnsense.html
ExploitThird Party Advisory