CVE-2020-15183: SoyCMS 3.0.2 and earlier is affected by Reflected Cross-Site Scripting (XSS) which leads to Remote Code Execut

Q: How do I fix CVE-2020-15183?

soycms: upgrade to newer than 3.0.2. Exact commands for each OS are on this page.

Q: Is CVE-2020-15183 being exploited?

CVE-2020-15183 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-15183 affect?

CVE-2020-15183 affects soycms. Severity is high (CVSS 8.4). SoyCMS 3.0.2 and earlier is affected by Reflected Cross-Site Scripting (XSS) which leads to Remote Code Execution (RCE) from a known vulnerability. This allows remote attackers to force the administrator to edit files once the adminsitrator

Q: How urgent is CVE-2020-15183?

Priority 54/100. High severity; Public exploit reference

This month

HIGH 8.4UPGRADE

CVE-2020-15183 is a high-severity flaw (CVSS 8.4) affecting soycms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SoyCMS 3.0.2 and earlier is affected by Reflected Cross-Site Scripting (XSS) which leads to Remote Code Execution (RCE) from a known vulnerability. This allows remote attackers to force the administrator to edit files once the adminsitrator loads a specially crafted webpage.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.4 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-09-17
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: soycms project

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

Am I affected?

Timeline

2020-09-17 20:15 UTCPublished CVE record published
2026-06-17 02:56 UTCUpdated Record last modified

soycms project soycms UPGRADE

Affected: <= 3.0.2

Fixed in: newer than 3.0.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.0.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade soycms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade soycms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2020-15183?

soycms: upgrade to newer than 3.0.2. Exact commands for each OS are on this page.

Is CVE-2020-15183 being exploited?

CVE-2020-15183 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-2020-15183 affect?

CVE-2020-15183 affects soycms. Severity is high (CVSS 8.4). SoyCMS 3.0.2 and earlier is affected by Reflected Cross-Site Scripting (XSS) which leads to Remote Code Execution (RCE) from a known vulnerability. This allows remote attackers to force the administrator to edit files once the adminsitrator

How urgent is CVE-2020-15183?

Priority 54/100. High severity; Public exploit reference

References

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