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CVE-2026-13448 is an unauthenticated remote code execution vulnerability in IBM Langflow OSS affecting versions 1.0.0 through 1.10.1. The flaw exists in the public flow build endpoint, where server-side validation intended to prevent execution-capable flow components is implemented through the validate_public_flow_no_code_execution() function. That validation relies on an incomplete denylist and fails to block multiple agent components capable of executing code, including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent. As a result, a remote attacker can submit a crafted public flow build request that bypasses the intended restriction and causes the server to execute attacker-controlled logic.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.