mediumCVSS 5.4NVD status: Analyzed

CVE-2026-17621

Langflow: IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system.

ComponentLangflow
Severitymedium (CVSS 5.4)
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Published (NVD)2026-09-04
Last modified2026-09-10
Affected versions
langflow >= 1.0.0, < 1.10.3
Fixed in1.10.3
WeaknessCWE-22
CISA KEVnot listed

NVD description

IBM Langflow OSS 1.0.0 through 1.10.2 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.

Does CVE-2026-17621 hit the version you run?Paste your docker-compose.yml, requirements.txt or package.json. The scanner checks your pinned versions against this CVE and every other one we track for Langflow.
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What to do

  • Upgrade Langflow to 1.10.3 or later.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

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