CVE-2026-101861

MEDIUMPre-NVD 4.14.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.1 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.2% (8th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:vulncheck, epss
Trending — 3 sources updated this week
4.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Langflow 1.0.16 before 1.12.0 and 0.0.94 before 1.12.0 contain an unsafe eval() vulnerability in schema.py that allows authenticated attackers to achieve code execution by placing a Python object with a malicious __repr__ method into component input options lists. The eval() sink is triggered when a component is converted into a LangChain tool via ComponentToolkit.get_tools(), including during custom component saves through the API, by interpolating options into a Literal type string that is passed directly to eval() without safe evaluation controls.

CVSS v3
4.1
EG Score
4.1MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity41% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 28, 2026

Last Modified

October 1, 2026

Advisory Details (2)

Auto-updated Sep 28, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Releases · langflow-ai/langflow · GitHub

https://github.com/langflow-ai/langflow/releases#release-v1.12.0
github Patch Available🟡 PoC Available

Langflow 1.0.16 - 1.11.6: unsafe eval() on Tool-Mode input options in schema.py · Advisory · langflow-ai/langflow · GitHub

https://github.com/langflow-ai/langflow/security/advisories/GHSA-33p4-w7j3-33mw

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 09:35 UTCEG score recompute
  2. 2026-10-03 14:25 UTCEPSS rescore
  3. 2026-10-03 11:41 UTCEG score recompute
  4. 2026-10-02 13:19 UTCEG score recompute
  5. 2026-10-01 19:49 UTCEPSS rescore
  6. 2026-10-01 15:26 UTCEG score recompute
  7. 2026-09-30 21:30 UTCEG score recompute
  8. 2026-09-30 20:27 UTCEG score recompute
  9. 2026-09-30 17:47 UTCEG score recompute
  10. 2026-09-30 15:02 UTCEPSS rescore
  11. 2026-09-30 12:21 UTCEG score recompute
  12. 2026-09-29 15:20 UTCEPSS rescore
  13. 2026-09-29 14:27 UTCEG score recompute
  14. 2026-09-28 16:31 UTCEG score recompute
  15. 2026-09-28 15:57 UTCEG score recompute
  16. 2026-09-28 15:56 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-101861?
CVE-2026-101861 is a medium vulnerability published on September 28, 2026. Langflow 1.0.16 before 1.12.0 and 0.0.94 before 1.12.0 contain an unsafe eval() vulnerability in schema.py that allows authenticated attackers to achieve code execution by placing a Python object with a malicious repr method into component input options lists. The eval() sink is triggered when a…
When was CVE-2026-101861 disclosed?
CVE-2026-101861 was first published on September 28, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-101861 actively exploited?
CVE-2026-101861 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-101861?
CVE-2026-101861 has a CVSS base score of 4.1 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-101861?
A fix for CVE-2026-101861 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-101861

Explore →

Is Your Infrastructure Affected by CVE-2026-101861?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs