CVE-2018-13123: onefilecms.php in OneFileCMS through 2017-10-08 might allow attackers to read arbitrary files via the i and f

Q: How do I fix CVE-2018-13123?

onefilecms: upgrade to newer than 2017-10-09. Exact commands for each OS are on this page.

Q: Is CVE-2018-13123 being exploited?

CVE-2018-13123 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-2018-13123 affect?

CVE-2018-13123 affects onefilecms. Severity is critical (CVSS 9.8). onefilecms.php in OneFileCMS through 2017-10-08 might allow attackers to read arbitrary files via the i and f parameters, as demonstrated by ?i=etc/&f=passwd&p=raw_view for the /etc/passwd file.

Q: How urgent is CVE-2018-13123?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-13123 is a critical-severity flaw (CVSS 9.8) affecting onefilecms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

onefilecms.php in OneFileCMS through 2017-10-08 might allow attackers to read arbitrary files via the i and f parameters, as demonstrated by ?i=etc/&f=passwd&p=raw_view for the /etc/passwd file.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-200
Published	2018-07-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: onefilecms

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

Am I affected?

Timeline

2018-07-03 22:29 UTCPublished CVE record published
2026-06-17 01:38 UTCUpdated Record last modified

onefilecms onefilecms UPGRADE

Affected: <= 2017-10-09

Fixed in: newer than 2017-10-09

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2017-10-09 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade onefilecms

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-2018-13123?

onefilecms: upgrade to newer than 2017-10-09. Exact commands for each OS are on this page.

Is CVE-2018-13123 being exploited?

CVE-2018-13123 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-2018-13123 affect?

CVE-2018-13123 affects onefilecms. Severity is critical (CVSS 9.8). onefilecms.php in OneFileCMS through 2017-10-08 might allow attackers to read arbitrary files via the i and f parameters, as demonstrated by ?i=etc/&f=passwd&p=raw_view for the /etc/passwd file.

How urgent is CVE-2018-13123?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

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References

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