9.8

CVE-2026-9103: ibm langflow oss

CVSS: 9.8v3.1CriticalAnalyzed
Published 17-07-2026Last modified 23-07-2026
Open JSON

Vulnerability summary

CVE-2026-9103 is a critical (CVSS 9.8) vulnerability in ibm langflow oss. EPSS estimates a 3.21% chance of exploitation in the next 30 days, higher than 88% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
3.21%
0%100%
Low · +0.38 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 17-07-2026
    PublishedVulnerability first disclosed.
  2. 23-07-2026
    Last modifiedVulnerability information updated.

Description

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to gain unauthorized access due to improper authentication in the /api/v1/login/auto_login endpoint. The endpoint issues long-lived superuser bearer tokens without requiring authentication when the AUTO_LOGIN configuration is enabled (enabled by default), which may allow an unauthenticated network attacker to obtain full administrative access. Additionally, permissive cross-origin resource sharing (CORS) settings may allow tokens to be exposed to unintended origins, increasing the risk of unauthorized access.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

3.21%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

+0.38 pp

From 2.83% on 21-09-2026

21-09-202621-10-2026
EPSS score
3.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ibm1 product
Langflow1 product

2 vendors · 2 products

References

1 links