CVE-2023-24189: An XML External Entity (XXE) vulnerability in urule v2.1.7 allows attackers to execute arbitrary code via uplo

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-24189 is a critical-severity flaw (CVSS 9.8) affecting urule. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An XML External Entity (XXE) vulnerability in urule v2.1.7 allows attackers to execute arbitrary code via uploading a crafted XML file to /urule/common/saveFile.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-611
Published	2023-02-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bstek

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

Am I affected?

Timeline

2023-02-24 22:15 UTCPublished CVE record published
2026-06-17 05:38 UTCUpdated Record last modified

bstek urule DOWNGRADE

Affected: 2.1.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.1.7 (Debian / Ubuntu)

apt-cache madison urule sudo apt install urule=<VERSION_BEFORE_2.1.7> sudo apt-mark hold urule

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

dnf --showduplicates list urule sudo dnf downgrade urule-<VERSION_BEFORE_2.1.7> sudo dnf versionlock add urule

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-2023-24189?

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

Is CVE-2023-24189 being exploited?

CVE-2023-24189 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-2023-24189 affect?

CVE-2023-24189 affects urule. Severity is critical (CVSS 9.8). An XML External Entity (XXE) vulnerability in urule v2.1.7 allows attackers to execute arbitrary code via uploading a crafted XML file to /urule/common/saveFile.

How urgent is CVE-2023-24189?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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