CVE-2026-48520

MEDIUM 6.1 PoC AVAILABLE

Published 2026-06-23 · Last modified 2026-06-24

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.10.0, the "Shareable Playground" (or "Public Flows" in code) contains a potential arbitrary file-read vulnerability, depending on the exact flow configuration used. By making a flow public, public execution of the flow is allowed. The execution request can contain a list of files that gets read by Langflow and fed into the LLM. The files path can be any path supported by the storage - it can be either a local file or S3 path if supported by the local configuration This vulnerability is fixed in 1.10.0.

EXPLOIT AVAILABLE

Public exploit or PoC code exists. Modeled probability is still low, but the barrier to attack is reduced — watch closely.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 19th percentile

○ In CISA KEV ● Public exploit / PoC

Impact if exploited

6.1CVSS 3.1 · MEDIUM

ConfidentialityHigh
IntegrityNone
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
⚠User interaction: A user must take an action (click / open a file)
⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

reference https://github.com/langflow-ai/langflow/security/advisories/GHSA-rcjh-r59h-gq37
github-search Search GitHub for public PoC repos

Test against your own equipment

curl -s https://vulnpedia.com/cve/CVE-2026-48520/poc.jsonMachine-readable PoC index for this CVE (for automation).

Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-48520/poc.json

Affected

Vendors Langflow Ai Langflow

Products Langflow

Weakness (CWE)

CWE-73: : External Control of File Name or Path

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N

Known Affected Software Configurations

Vendor	Product	Version range
Langflow	Langflow	< 1.10.0

All CVSS metrics

MEDIUM 6.1 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
MEDIUM 6.1 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N

References

Exploits & PoC

https://github.com/langflow-ai/langflow/security/advisories/GHSA-rcjh-r59h-gq37 x_refsource_CONFIRMexploitExploitVendor Advisory

Sources: NVD · CVE.org · EPSS