CVE-2023-43875: Multiple Cross-Site Scripting (XSS) vulnerabilities in installation of Subrion CMS v.4.2.1 allows a local atta

This month

MEDIUM 6.1DOWNGRADE

CVE-2023-43875 is a medium-severity flaw (CVSS 6.1) affecting subrion cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-10-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: intelliants

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-19 22:15 UTCPublished CVE record published
2026-06-17 06:26 UTCUpdated Record last modified

intelliants subrion cms DOWNGRADE

Affected: 4.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2.1

1. Check installed version

apt-cache policy subrion-cms || rpm -q subrion-cms || subrion-cms --version

2. No fixed release: DOWNGRADE to a release before 4.2.1 (Debian / Ubuntu)

apt-cache madison subrion-cms sudo apt install subrion-cms=<VERSION_BEFORE_4.2.1> sudo apt-mark hold subrion-cms

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list subrion-cms sudo dnf downgrade subrion-cms-<VERSION_BEFORE_4.2.1> sudo dnf versionlock add subrion-cms

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-43875?

subrion cms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-43875 being exploited?

CVE-2023-43875 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-43875 affect?

CVE-2023-43875 affects subrion cms. Severity is medium (CVSS 6.1). 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

How urgent is CVE-2023-43875?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2025-70958 MEDIUM 6.1 DOWNGRADE Multiple reflected cross-site scripting (XSS) vulnerabilities in the installation module of Subrion CMS v4.2.1
CVE-2025-56556 LOW 3.8 DOWNGRADE An issue was discovered in Subrion CMS 4.2.1, allowing authenticated adminitrators or moderators with access t
CVE-2024-25399 MEDIUM 6.1 DOWNGRADE Subrion CMS 4.2.1 is vulnerable to Cross Site Scripting (XSS) via adminer.php.

References

← Back to latest CVEs