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CVE-2026-35164: Brave CMS is an open-source CMS

50
This month
HIGH 8.8UPGRADE

CVE-2026-35164 is a high-severity flaw (CVSS 8.8) affecting bravecms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Brave CMS is an open-source CMS. Prior to 2.0.6, an unrestricted file upload vulnerability exists in the CKEditor upload functionality. It is found in app/Http/Controllers/Dashboard/CkEditorController.php within the ckupload method. The method fails to validate uploaded file types and relies entirely on user input. This allows an authenticated user to upload executable PHP scripts and gain Remote Code Execution. This vulnerability is fixed in 2.0

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.8% (top 45%)
CISA exploited listNo
WeaknessCWE-434
Published2026-04-06
Last modified2026-10-24
Publisher (CNA): GitHub, Inc. · Vendor: ajax30

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

ajax30 bravecms UPGRADE
Affected: >= 2.0.0 and < 2.0.6
Fixed in: 2.0.6
Safe to downgrade to: a release before 2.0.0
1. Check installed version
apt-cache policy bravecms || rpm -q bravecms || bravecms --version
2. UPGRADE to 2.0.6 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade bravecms
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade bravecms
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)
apt-cache madison bravecms sudo apt install bravecms=<VERSION_BEFORE_2.0.0> sudo apt-mark hold bravecms
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list bravecms sudo dnf downgrade bravecms-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add bravecms
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.

Exact fixes by distribution

Fedora 46 · gnome-shell-extension-tiling-assistant · FIXED · 56-1.fc46 · FEDORA-2026-ebf66a5321 · source
sudo dnf upgrade --advisory=FEDORA-2026-ebf66a5321
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-2026-35164?

bravecms: upgrade to 2.0.6. Exact commands for each OS are on this page.

Is CVE-2026-35164 being exploited?

CVE-2026-35164 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-2026-35164 affect?

CVE-2026-35164 affects bravecms. Severity is high (CVSS 8.8). Brave CMS is an open-source CMS. Prior to 2.0.6, an unrestricted file upload vulnerability exists in the CKEditor upload functionality. It is found in app/Http/Controllers/Dashboard/CkEditorController.php within the ckupload method. The met

How urgent is CVE-2026-35164?

Priority 50/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

References

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