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CVE-2026-104308VulnerabilityPublished

IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to cause a denial of service due to

Source GCVE Database

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Authoritative record:CVE-2026-104308· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium.

Data as of 29 Oct 2026, 20:14 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ibm)CVSS 3.14.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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 <=1.12.3
Fixed in–

AI-suggested

Until a fix is available, restrict access to trusted users and monitor for unusual service disruptions.

Description

IBM Langflow OSS versions 1.0.0 through 1.12.3 contain a vulnerability that allows a remote authenticated attacker to cause a denial of service by exploiting improper neutralization of special elements in OS commands. This flaw does not impact confidentiality or integrity but affects availability.

References

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