PatchTheCVECVE-2026-12946: IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to inject arbitrary code on the system, du
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This month
CRITICAL 9.9UPGRADE
CVE-2026-12946 is a critical-severity flaw (CVSS 9.9) affecting langflow. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to inject arbitrary code on the system, due to the improper control of user input code.
Why this priority
- Critical severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.9 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 50%) |
| CISA exploited list | No |
| Weakness | CWE-94 |
| Published | 2026-07-30 |
| Last modified | 2026-10-23 |
Publisher (CNA): IBM Corporation · Vendor: langflow
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
langflow langflow UPGRADE
Affected: >= 1.0.0 and < 1.10.1
Fixed in: 1.10.1
Safe to downgrade to: a release before 1.0.0
1. Check installed version
apt-cache policy langflow || rpm -q langflow || langflow --version
2. UPGRADE to 1.10.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade langflow
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade langflow
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 1.0.0 (Debian / Ubuntu)
apt-cache madison langflow
sudo apt install langflow=<VERSION_BEFORE_1.0.0>
sudo apt-mark hold langflow
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list langflow
sudo dnf downgrade langflow-<VERSION_BEFORE_1.0.0>
sudo dnf versionlock add langflow
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-trimesh · FIXED · 5.2.0-1.fc46 · FEDORA-2026-429b4bad4c · source
sudo dnf upgrade --advisory=FEDORA-2026-429b4bad4c
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.
Related CVEs
- CVE-2026-13442 HIGH 7.1 UPGRADE IBM Langflow OSS 1.0.0 through 1.10.1 can allow an attacker to reuse another user's FAISS namespace to access
- CVE-2026-12940 CRITICAL 9.8 UPGRADE IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment
- CVE-2026-13435 CRITICAL 9.9 UPGRADE IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sa
- CVE-2026-12942 HIGH 7.5 UPGRADE IBM Langflow OSS 1.0.0 through 1.10.1 could allow a remote attacker to traverse directories on the system
- CVE-2026-13444 HIGH 8.1 UPGRADE IBM Langflow OSS 1.0.0 through 1.10.1 can allow an attacker to access another user's private vector documents