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Not in CISA KEV
MEDIUM severity

CVE-2023-43875 — subrion

MEDIUM

CVE-2023-43875 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in intelliants/subrion. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Subrion CMS vulnerable to Cross-site Scripting

Also known asGHSA-646r-8fcc-p82r
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
2 known
Exploitation data as of Nov 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-43875.

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs58th percentile — riskier than 58% of all scored CVEsHighest risk
0.21%1.19%2.17%3.15%2.6%0.8%May 26Aug 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘intelliants/subrion

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Multiple Cross-Site Scripting (XSS) vulnerabilities in installation of Subrion CMS v.4.2.1 allows a local attacker to execute arbitrary web scripts via a crafted payload injected into the dbhost, dbname, dbuser, adminusername and adminemail.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistintelliants/subrionall versionsNo fix

Affected Products

1 product · 1 configurations
Application
subrion cmsintelliants
1 version
4.2.1
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Multiple Cross-Site Scripting (XSS) vulnerabilities in installation of S…

github.comNVDOct 2023

Report on github.com

github.comNVDOct 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for intelliants/subrion, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of intelliants/subrion for CVE-2023-43875. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Multiple Cross-Site Scripting (XSS) vulnerabilities in installation of Subrion CMS v.4.2.1 allows a local attacker to execute arbitrary web scripts via a crafted payload injected into the dbhost, dbname, dbuser, adminusername and adminemail.
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CVE-2023-43875: subrion XSS (Medium 6.1)