Patchfirst
CVE-2026-7873 Public exploit Critical · 9.9 EPSS 1.6%

Code Injection Vulnerability in Code Validation Endpoint

IBM · Langflow OSS

Summary

A code injection flaw in the Code Validation endpoint of IBM Langflow OSS (versions 1.0.0 through 1.10.0) lets an attacker inject code that the component then processes. An authenticated attacker with network access and no user interaction can execute arbitrary OS commands and read sensitive files, including credentials, which can enable full system compromise and lateral movement.

Official description · CVE.org

IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.

Breakdown
73.5 / 100
Exploited
Yes, in VulnCheck KEV
Reports
0
Tactics
0/15

Public exploit code (Metasploit) was available the same day.

  1. DisclosedPublic exploit codeMetasploitday 0

7 fixes in langflow over 3 months. The latest fix listed for langflow is 1.10.1.

Fixes in langflowPyPI package, by fixed version. Earlier and later fixes in the same package, not necessarily the same bug.

  1. 1.9.2CVE-2026-5525523 Jun 2026KEV
  2. 1.9.2CVE-2026-5544723 Jun 2026
  3. 1.10.0CVE-2026-4852023 Jun 2026
  4. 1.10.1.rc0CVE-2026-787330 Jun 2026
  5. 1.10.1CVE-2026-1056122 Jun 2026
  6. 1.10.1CVE-2026-518861 Oct 2026
  7. 1.10.1CVE-2026-1056985 Oct 2026Latest listed

techniques

No techniques linked

No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.

Am I affected? What do I upgrade to?

From GitHub Security Advisories and OSV

1 package in 1 ecosystem. Main package: langflow.

Upgrade to 1.10.3 or later

Fixes this CVE and 12 other known vulnerabilities in this package (CVE-2024-37014, CVE-2025-3248, +10).

pippip install "langflow>=1.10.3"

First fixed in 1.10.1.rc0 for CVE-2026-7873.

Affected versions

If you runUpgrade to
1.0.0 up to 1.10.1.rc01.10.3first fix for this CVE: 1.10.1.rc0

“Up to” means the second version is the fix and is not affected.

Check your lockfile against all CVEs

What security researchers reported

Not named in any threat report yet

Also mentioned in 4 community threat pulses (AlienVault OTX)

Weaker evidence

Pulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.

References

1 link, grouped by NVD tag
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