CVE-2024-57549: CMSimple 5.16 allows the user to read cms source code through manipulation of the file name in the file parame

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2024-57549 is a high-severity flaw (CVSS 7.5) affecting cmsimple. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CMSimple 5.16 allows the user to read cms source code through manipulation of the file name in the file parameter of a GET request.

Why this priority

High 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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-22
Published	2025-01-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cmsimple

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

Am I affected?

Timeline

2025-01-27 23:15 UTCPublished CVE record published
2026-06-17 08:13 UTCUpdated Record last modified

cmsimple cmsimple DOWNGRADE

Affected: 5.16

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.16

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.16 (Debian / Ubuntu)

apt-cache madison cmsimple sudo apt install cmsimple=<VERSION_BEFORE_5.16> sudo apt-mark hold cmsimple

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

dnf --showduplicates list cmsimple sudo dnf downgrade cmsimple-<VERSION_BEFORE_5.16> sudo dnf versionlock add cmsimple

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-2024-57549?

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

Is CVE-2024-57549 being exploited?

CVE-2024-57549 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-2024-57549 affect?

CVE-2024-57549 affects cmsimple. Severity is high (CVSS 7.5). CMSimple 5.16 allows the user to read cms source code through manipulation of the file name in the file parameter of a GET request.

How urgent is CVE-2024-57549?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-58280 HIGH 8.8 DOWNGRADE CMSimple 5.15 contains a remote command execution vulnerability that allows authenticated attackers to modify
CVE-2024-57548 CRITICAL 9.1 DOWNGRADE CMSimple 5.16 allows the user to edit log.php file via print page.
CVE-2024-57547 HIGH 7.5 DOWNGRADE Insecure Permissions vulnerability in CMSimple v.5.16 allows a remote attacker to obtain sensitive information
CVE-2024-57546 HIGH 7.5 DOWNGRADE An issue in CMSimple v.5.16 allows a remote attacker to obtain sensitive information via a crafted script to t
CVE-2024-33424 MEDIUM 6.1 DOWNGRADE A cross-site scripting (XSS) vulnerability in the Settings menu of CMSimple v5.15 allows attackers to execute

References

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