CVE-2026-18545: CWE-918 Server-Side Request Forgery (SSRF) in IBM Langflow OSS
Description
IBM Langflow OSS versions 1.0.0 through 1.11.1 contain a server-side request forgery (SSRF) vulnerability. An authenticated attacker could exploit this flaw to send unauthorized requests from the affected system. This may enable network enumeration or assist in launching further attacks. The vulnerability has a CVSS score of 4.3, indicating medium severity. No official patch or remediation information is provided in the available data.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18545 is a server-side request forgery (SSRF) vulnerability in IBM Langflow OSS versions 1.0.0 through 1.11.1. The flaw allows an authenticated attacker to induce the system to send unauthorized requests, potentially leading to network reconnaissance or enabling other attack vectors. The vulnerability is identified as CWE-918 and carries a CVSS v3.1 base score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N), reflecting a medium impact primarily on confidentiality. There is no vendor advisory or patch information available, and no known exploits in the wild have been reported.
Potential Impact
An authenticated attacker can leverage this SSRF vulnerability to make the affected system send unauthorized network requests. This can lead to network enumeration, potentially revealing internal network structure or services. The confidentiality impact is low, with no direct integrity or availability impact reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict authenticated user permissions to limit exposure and monitor for suspicious activity related to unauthorized network requests.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2gc5-29jq-86vf
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-18545"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a92f7dfacd9273b49e75b9a
Added to database: 08/29/2026, 15:16:47 UTC
Last enriched: 09/09/2026, 21:08:54 UTC
Last updated: 10/13/2026, 18:48:18 UTC
Views: 38
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