CVE-2026-9077
CVE-2026-9077 is a high-severity vulnerability in Langflow with a CVSS 3.x base score of 8.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-807.
Key facts
- Severity: High (CVSS 3.x base score 8.5)
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-807
- Affected product: Langflow
- Published:
- Last modified:
Description
IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system.
Frequently asked questions
- What is CVE-2026-9077?
- IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system.
- How severe is CVE-2026-9077?
- CVE-2026-9077 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
- Is CVE-2026-9077 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-9077?
- CVE-2026-9077 affects Langflow. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-9077?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-9077 published?
- CVE-2026-9077 was published on 2026-08-05 and last updated on 2026-08-06.
References
Affected products (1)
- cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
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