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VulnerabilityPublished

CVE-2026-77817: 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 29 Oct 2026, 15:53 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ibm)CVSS 3.16.5
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 29 Oct 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 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMLangflow OSSAffected
  • >=1.0.0 <=1.12.4
Fixed in–

CPE configurations (2)

  • cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:langflow_oss:1.12.4:*:*:*:*:*:*:*

AI-suggested

Since the vulnerability requires authentication, restricting access to trusted users and monitoring export activities may reduce risk. Check IBM's official advisories for updates or patches addressing this issue.

Description

IBM Langflow OSS versions 1.0.0 through 1.12.4 contain a vulnerability where a remote authenticated attacker can obtain sensitive information due to improper sanitization of secrets during flow and project exports. This exposure of sensitive data does not affect integrity or availability but impacts confidentiality.

References

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