Quick answers
- Is CVE-2026-3341 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-3341 being exploited in the wild.
- How severe is CVE-2026-3341?
- Medium severity, with a CVSS score of 5.4, published 11 June 2026.
- Which products and versions are affected?
- IBM Langflow Desktop 1.0.0 - 1.9.2.
- Is there a fix for CVE-2026-3341?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-3341 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-3341?
- Check whether you run IBM Langflow Desktop 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
IBM Langflow Desktop (versions 1.0.0 through 1.9.2) contains a Time-of-Check to Time-of-Use (TOCTOU) vulnerability in its SSRF protection mechanism. The 'validate_url_for_ssrf()' function performs a DNS lookup to validate an IP, but the subsequent request via 'httpx.AsyncClient()' performs a second, independent lookup. An attacker can use a DNS rebinding attack with a TTL of 0 to provide a safe IP during validation and a private/local IP (such as 127.0.0.1 or cloud metadata IPs) during execution. While DNS pinning infrastructure exists in the codebase, it is not consistently applied across all code paths. This allows authenticated attackers to perform network enumeration or access internal services. The issue is resolved in version 1.9.3.
Affected products
- IBM Langflow Desktop 1.0.0 - 1.9.2
Timeline
- 2026-06-08: advisory: Initial publication by IBM
- 2026-06-11: disclosed: NVD publication date