CVE-2026-3345: IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system

Q: How do I fix CVE-2026-3345?

langflow desktop: upgrade to newer than 1.8.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-3345 being exploited?

CVE-2026-3345 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-3345 affect?

CVE-2026-3345 affects langflow desktop. Severity is medium (CVSS 6.5). IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

Q: How urgent is CVE-2026-3345?

Priority 31/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-3345 is a medium-severity flaw (CVSS 6.5) affecting langflow desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-04-30
Last modified	2026-10-26

Publisher (CNA): IBM Corporation · Vendor: langflow

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-30 22:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

langflow langflow desktop UPGRADE

Affected: <= 1.8.4

Fixed in: newer than 1.8.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy langflow-desktop || rpm -q langflow-desktop || langflow-desktop --version

2. UPGRADE to newer than 1.8.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade langflow-desktop

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade langflow-desktop

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-3345?

langflow desktop: upgrade to newer than 1.8.4. Exact commands for each OS are on this page.

Is CVE-2026-3345 being exploited?

CVE-2026-3345 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-2026-3345 affect?

CVE-2026-3345 affects langflow desktop. Severity is medium (CVSS 6.5). IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

How urgent is CVE-2026-3345?

Priority 31/100. No elevated risk signals yet.

Related CVEs

CVE-2026-6543 HIGH 8.8 UPGRADE IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow allows an attacker to execute arbitrary commands with the pr
CVE-2026-3340 MEDIUM 6.5 UPGRADE IBM Langflow Desktop 1.0.0 through 1.8.4 IBM Langflow is vulnerable to server-side request forgery (SSRF)
CVE-2026-4503 HIGH 7.5 UPGRADE IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow could allow an unauthenticated user to view other users' ima
CVE-2026-4502 MEDIUM 6.5 UPGRADE IBM Langflow Desktop 1.2.0 through 1.8.4 Langflow could allow an authenticated attacker to traverse directorie
CVE-2026-3346 MEDIUM 6.4 UPGRADE IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting

References

← Back to latest CVEs