PatchTheCVECVE-2026-29198: In Rocket.Chat <8.3.0, <8.2.1, <8.1.2, <8.0.3, <7.13.5, <7.12.6, <7.11.6, and <7.10.9, a NoSQL injection vulne
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CRITICAL 9.8REMOTEUPGRADE
CVE-2026-29198 is a critical-severity flaw (CVSS 9.8) affecting rocket.chat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In Rocket.Chat <8.3.0, <8.2.1, <8.1.2, <8.0.3, <7.13.5, <7.12.6, <7.11.6, and <7.10.9, a NoSQL injection vulnerability can lead to account takeover of the first user with a generated token when an OAuth app is configured.
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 | 0.6% (top 54%) |
| CISA exploited list | No |
| Weakness | CWE-89 |
| Published | 2026-04-23 |
| Last modified | 2026-10-23 |
Publisher (CNA): HackerOne · Vendor: rocket.chat
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
rocket.chat rocket.chat UPGRADE
Affected: < 7.10.9 · >= 7.11.0 and < 7.11.6 · >= 7.12.0 and < 7.12.6 · >= 7.13.0 and < 7.13.5 · >= 8.0.0 and < 8.0.3 · >= 8.1.0 and < 8.1.2 · >= 8.2.0 and < 8.2.1 · 8.3.0 rc0
Fixed in: 7.10.9, 7.11.6, 7.12.6, 7.13.5, 8.0.3, 8.1.2, 8.2.1
Safe to downgrade to: a release before 7.11.0
1. Check installed version
apt-cache policy rocket.chat || rpm -q rocket.chat || rocket.chat --version
2. UPGRADE to 7.10.9 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade rocket.chat
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade rocket.chat
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 7.11.0 (Debian / Ubuntu)
apt-cache madison rocket.chat
sudo apt install rocket.chat=<VERSION_BEFORE_7.11.0>
sudo apt-mark hold rocket.chat
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list rocket.chat
sudo dnf downgrade rocket.chat-<VERSION_BEFORE_7.11.0>
sudo dnf versionlock add rocket.chat
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
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: hieuminhnv/CVE-2026-29198-POC (1 stars)
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.