CVE-2018-20755: MODX Revolution through v2.7.0-pl allows XSS via the User Photo field.

Q: How do I fix CVE-2018-20755?

modx revolution: upgrade to newer than 2.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2018-20755 being exploited?

CVE-2018-20755 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-2018-20755 affect?

CVE-2018-20755 affects modx revolution. Severity is medium (CVSS 6.1). MODX Revolution through v2.7.0-pl allows XSS via the User Photo field.

Q: How urgent is CVE-2018-20755?

Priority 41/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2018-20755 is a medium-severity flaw (CVSS 6.1) affecting modx revolution. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MODX Revolution through v2.7.0-pl allows XSS via the User Photo field.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-02-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: modx

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

Am I affected?

Timeline

2019-02-06 17:29 UTCPublished CVE record published
2026-06-17 01:53 UTCUpdated Record last modified

modx modx revolution UPGRADE

Affected: <= 2.7.0 · 2.7.0 pl

Fixed in: newer than 2.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy modx-revolution || rpm -q modx-revolution || modx-revolution --version

2. UPGRADE to newer than 2.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade modx-revolution

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade modx-revolution

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-2018-20755?

modx revolution: upgrade to newer than 2.7.0. Exact commands for each OS are on this page.

Is CVE-2018-20755 being exploited?

CVE-2018-20755 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-2018-20755 affect?

CVE-2018-20755 affects modx revolution. Severity is medium (CVSS 6.1). MODX Revolution through v2.7.0-pl allows XSS via the User Photo field.

How urgent is CVE-2018-20755?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2020-25911 CRITICAL 9.1 DOWNGRADE A XML External Entity (XXE) vulnerability was discovered in the modRestServiceRequest component in MODX CMS 2.
CVE-2019-1010123 HIGH 7.5 UPGRADE MODX Revolution Gallery 1.7.0 is affected by: CWE-434: Unrestricted Upload of File with Dangerous Type
CVE-2018-20758 MEDIUM 5.4 UPGRADE MODX Revolution through v2.7.0-pl allows XSS via User Settings such as Description.
CVE-2018-20757 MEDIUM 6.1 UPGRADE MODX Revolution through v2.7.0-pl allows XSS via an extended user field such as Container name or Attribute na
CVE-2018-20756 MEDIUM 6.1 UPGRADE MODX Revolution through v2.7.0-pl allows XSS via a document resource (such as pagetitle), which is mishandled

References

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