CVE-2023-36217: Cross Site Scripting vulnerability in Xoops CMS v.2.5.10 allows a remote attacker to execute arbitrary code vi

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CRITICAL 9.0DOWNGRADE

CVE-2023-36217 is a critical-severity flaw (CVSS 9.0) affecting xoops. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting vulnerability in Xoops CMS v.2.5.10 allows a remote attacker to execute arbitrary code via the category name field of the image manager function.

Why this priority

Critical severity
Public exploit reference

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

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.6% (top 25%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-08-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: xoops

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

Am I affected?

Timeline

2023-08-03 18:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

xoops xoops DOWNGRADE

Affected: 2.5.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.5.10

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.5.10 (Debian / Ubuntu)

apt-cache madison xoops sudo apt install xoops=<VERSION_BEFORE_2.5.10> sudo apt-mark hold xoops

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

dnf --showduplicates list xoops sudo dnf downgrade xoops-<VERSION_BEFORE_2.5.10> sudo dnf versionlock add xoops

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-2023-36217?

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

Is CVE-2023-36217 being exploited?

CVE-2023-36217 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-2023-36217 affect?

CVE-2023-36217 affects xoops. Severity is critical (CVSS 9.0). Cross Site Scripting vulnerability in Xoops CMS v.2.5.10 allows a remote attacker to execute arbitrary code via the category name field of the image manager function.

How urgent is CVE-2023-36217?

Priority 55/100. Critical severity; Public exploit reference

References

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