PatchTheCVECVE-2026-35047: Brave CMS is an open-source CMS
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This month
CRITICAL 9.8REMOTEUPGRADE
CVE-2026-35047 is a critical-severity flaw (CVSS 9.8) 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 in the CKEditor endpoint allows attackers to upload arbitrary files, including executable scripts. This may lead to Remote Code Execution (RCE) on the server, potentially resulting in full system compromise, data exfiltration, or service disruption. All users running affected versions of BraveCMS are impacted. This vulnerability is fixed in 2.0.6.
Why this priority
- Critical severity
- CISA SSVC: automatable with total technical impact
- 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 | 1.0% (top 37%) |
| CISA exploited list | No |
| Weakness | CWE-434 |
| Published | 2026-04-06 |
| Last modified | 2026-10-23 |
Publisher (CNA): GitHub, Inc. · Vendor: ajax30
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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 · python-openslide · FIXED · 1.4.7-1.fc46 · FEDORA-2026-336bea884e · source
sudo dnf upgrade --advisory=FEDORA-2026-336bea884e
Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source
sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15
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.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.