How severe is CVE-2026-4502?

CVE-2026-4502 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-4502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4502?

CVE-2026-4502 affects Langflow Langflow Desktop. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4502?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-4502 have an EU (EUVD) identifier?

Yes. CVE-2026-4502 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26434.

When was CVE-2026-4502 published?

CVE-2026-4502 was published on 2026-04-30 and last updated on 2026-06-17.

CVE-2026-4502

CVE-2026-4502 is a medium-severity vulnerability in Langflow Langflow Desktop with a CVSS 3.x base score of 6.5. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26434
Weakness: CWE-22
Affected product: Langflow Langflow Desktop
Published: 2026-04-30
Last modified: 2026-06-17

Description

IBM Langflow Desktop 1.2.0 through 1.8.4 Langflow could allow an authenticated attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to write arbitrary files on the system.

Frequently asked questions

What is CVE-2026-4502?: IBM Langflow Desktop 1.2.0 through 1.8.4 Langflow could allow an authenticated attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to write arbitrary files on the system.
How severe is CVE-2026-4502?: CVE-2026-4502 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-4502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4502?: CVE-2026-4502 affects Langflow Langflow Desktop. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4502 have an EU (EUVD) identifier?: Yes. CVE-2026-4502 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26434.
When was CVE-2026-4502 published?: CVE-2026-4502 was published on 2026-04-30 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7271097

Affected products (1)

cpe:2.3:a:langflow:langflow_desktop:*:*:*:*:*:*:*:*

More vulnerabilities in Langflow Langflow Desktop

CVE-2026-6543 — High (CVSS 8.8): IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow allows an attacker to execute arbitrary commands with the privileges…
CVE-2026-4503 — High (CVSS 7.5): IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow could allow an unauthenticated user to view other users' images due…
CVE-2026-3345 — Medium (CVSS 6.5): IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker…
CVE-2026-3340 — Medium (CVSS 6.5): IBM Langflow Desktop 1.0.0 through 1.8.4 IBM Langflow is vulnerable to server-side request forgery (SSRF). This may…
CVE-2026-3346 — Medium (CVSS 6.4): IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. This vulnerability…
CVE-2026-3341 — Medium (CVSS 5.4): IBM Langflow Desktop 1.0.0 through 1.9.2 IBM Langflow is vulnerable to server-side request forgery (SSRF). This may…

All CVEs affecting Langflow Langflow Desktop →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →