Quick answers
- Is CVE-2026-79723 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-79723 being exploited in the wild.
- How severe is CVE-2026-79723?
- Medium severity, with a CVSS score of 5, published 10 September 2026.
- Which products and versions are affected?
- IBM Langflow OSS 1.0.0 through 1.11.5.
- Is there a fix for CVE-2026-79723?
- A patch was published on 2026-09-10: Version 1.11.6 addresses the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-79723 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-79723?
- Check whether you run IBM Langflow OSS or Langflow at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a server-side request forgery (SSRF) flaw stemming from improper validation of user-controlled API endpoint URLs in multiple components, including the MCP server configuration, DataStax Astra DB connectors, IBM Db2 Vector Store connector, and OpenAI Chat Model components. Affected versions 1.0.0–1.11.5 pass these URLs directly to underlying SDKs without invoking the platform's connector SSRF validation guard. An authenticated attacker can supply URLs pointing to RFC 1918 addresses, loopback interfaces, or cloud metadata endpoints; some components (Db2, OpenAI) are also reachable via the unauthenticated public flow build endpoint, broadening the attack surface. Successful exploitation allows data exfiltration (including provider API keys) and internal network reconnaissance. The vulnerability was patched in version 1.11.6.
Affected products
- IBM Langflow OSS 1.0.0 through 1.11.5
Timeline
- 2026-09-10: disclosed
- 2026-09-10: patched: Version 1.11.6 addresses the vulnerability