CVE-2023-36121: Cross Site Scripting vulnerability in e107 v.2.3.2 allows a remote attacker to execute arbitrary code via the

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MEDIUM 5.4DOWNGRADE

CVE-2023-36121 is a medium-severity flaw (CVSS 5.4) affecting e107. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting vulnerability in e107 v.2.3.2 allows a remote attacker to execute arbitrary code via the description function in the SEO project.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-08-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: e107

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

Am I affected?

Timeline

2023-08-02 00:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

e107 e107 DOWNGRADE

Affected: 2.3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.2

1. Check installed version

apt-cache policy e107 || rpm -q e107 || e107 --version

2. No fixed release: DOWNGRADE to a release before 2.3.2 (Debian / Ubuntu)

apt-cache madison e107 sudo apt install e107=<VERSION_BEFORE_2.3.2> sudo apt-mark hold e107

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

dnf --showduplicates list e107 sudo dnf downgrade e107-<VERSION_BEFORE_2.3.2> sudo dnf versionlock add e107

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-2023-36121?

e107: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-36121 being exploited?

CVE-2023-36121 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-2023-36121 affect?

CVE-2023-36121 affects e107. Severity is medium (CVSS 5.4). Cross Site Scripting vulnerability in e107 v.2.3.2 allows a remote attacker to execute arbitrary code via the description function in the SEO project.

How urgent is CVE-2023-36121?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2025-11941 MEDIUM 5.4 UPGRADE A vulnerability was detected in e107 CMS up to 2.3.3
CVE-2025-61505 MEDIUM 6.5 UPGRADE e107 CMS thru 2.3.3 are vulnerable to insecure deserialization in the `install.php` script
CVE-2022-50939 HIGH 7.2 DOWNGRADE e107 CMS version 3.2.1 contains a critical file upload vulnerability that allows authenticated administrators
CVE-2022-50916 HIGH 7.2 DOWNGRADE e107 CMS version 3.2.1 contains a file upload vulnerability that allows authenticated administrators to overri
CVE-2022-50907 HIGH 7.2 DOWNGRADE e107 CMS version 3.2.1 contains a file upload vulnerability that allows authenticated administrative users to

References

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