CVE-2018-19196: An issue was discovered in XiaoCms 20141229

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-19196 is a critical-severity flaw (CVSS 9.8) affecting xiaocms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in XiaoCms 20141229. It allows remote attackers to execute arbitrary code by using the type parameter to bypass the standard admin\controller\uploadfile.php restrictions on uploaded file types (jpg, jpeg, bmp, png, gif), as demonstrated by an admin/index.php?c=uploadfile&a=uploadify_upload&type=php URI.

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	3.3% (top 11%)
CISA exploited list	No
Weakness	CWE-94
Published	2018-11-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: xiaocms

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

Am I affected?

Timeline

2018-11-12 05:29 UTCPublished CVE record published
2026-06-17 01:48 UTCUpdated Record last modified

xiaocms xiaocms DOWNGRADE

Affected: 20141229

Fixed in: no fixed release known

Safe to downgrade to: a release before 20141229

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 20141229 (Debian / Ubuntu)

apt-cache madison xiaocms sudo apt install xiaocms=<VERSION_BEFORE_20141229> sudo apt-mark hold xiaocms

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

dnf --showduplicates list xiaocms sudo dnf downgrade xiaocms-<VERSION_BEFORE_20141229> sudo dnf versionlock add xiaocms

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-2018-19196?

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

Is CVE-2018-19196 being exploited?

CVE-2018-19196 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-2018-19196 affect?

CVE-2018-19196 affects xiaocms. Severity is critical (CVSS 9.8). An issue was discovered in XiaoCms 20141229. It allows remote attackers to execute arbitrary code by using the type parameter to bypass the standard admin\controller\uploadfile.php restrictions on uploaded file types (jpg, jpeg, bmp, png, g

How urgent is CVE-2018-19196?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2019-6127 HIGH 7.2 DOWNGRADE An issue was discovered in XiaoCms 20141229
CVE-2018-19197 MEDIUM 4.9 DOWNGRADE An issue was discovered in XiaoCms 20141229
CVE-2018-19195 MEDIUM 6.1 DOWNGRADE An issue was discovered in XiaoCms 20141229
CVE-2018-19194 MEDIUM 5.3 DOWNGRADE An issue was discovered in XiaoCms 20141229
CVE-2018-19193 MEDIUM 6.1 DOWNGRADE An issue was discovered in XiaoCms 20141229

References

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