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VulnerabilityPublished

CVE-2026-10128: IBM Langflow OSS · Information Exposure

Affects IBM Langflow OSSSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium.

Data as of 3 Nov 2026, 22:58 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
IBMLangflow OSSAffected
  • >=1.0.0 <=1.10.3
Fixed in–

CPE configurations (2)

  • cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:*

AI-suggested

Until an official fix is available, restrict authenticated user access to trusted individuals only and monitor for unusual access patterns related to environment variable exposure. Avoid deploying the affected versions in sensitive environments if possible.

Description

IBM Langflow OSS versions 1.0.0 through 1.10.3 contain a vulnerability that allows authenticated users to exploit a built-in component to read arbitrary server environment variables. This exposure can leak sensitive secrets despite security controls intended to disable such custom components. The vulnerability is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) and has a CVSS 3.1 base score of 6.5, indicating medium severity.

References

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