EUVD-2026-94114
GHSA-43mm-q7h7-p26f
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Requires both the server secret and Redis write access (high-privilege foothold), so PR:H and AC:H; deserialization yields full RCE so C/I/A all High, scope unchanged.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
2DescriptionCVE.org
IBM Langflow OSS 1.0.0 through 1.12.2 could allow an attacker with access to the server secret and Redis write access to submit a malicious serialized cache value. When the value was retrieved, deserialization could have executed attacker-controlled code with the privileges of the service process.
AnalysisAI
Deserialization of untrusted cache data in IBM Langflow OSS 1.0.0 through 1.12.2 can execute attacker-controlled code with the privileges of the Langflow service process, but only for an attacker who has already obtained two things: the Langflow server secret and write access to the backing Redis instance used as the application cache. Because both prerequisites are effectively gated - the server secret is a trusted signing/trust value and Redis is normally bound to localhost or a private, authenticated network - this is not exploitable by an anonymous remote attacker against a default deployment, which is why the practical risk is lower than the 7.5 base score suggests. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires TWO specific, compounding prerequisites that must both be satisfied: (1) the attacker must possess the Langflow server secret (the application's secret key used to sign/trust cache contents), and (2) the attacker must have write access to the backend Redis instance that Langflow uses as its cache. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a high-CVSS (7.5) but genuinely gated vulnerability whose real-world risk is lower than the number suggests once the preconditions are weighed. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch status: Patch available per vendor advisory - IBM documents a fix for CVE-2026-93447 in its support note at https://www.ibm.com/support/pages/node/7290694; the exact patched Langflow OSS version is not stated in the available data, so confirm the fixed release level in that advisory and upgrade from the affected 1.0.0-1.12.2 range accordingly. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, confirm whether your organization runs IBM Langflow OSS versions 1.0.0 through 1.12.2 and immediately verify that the backing Redis instance is not exposed to untrusted networks, enforce authentication and network segmentation for Redis, and rotate the Langflow server secret if compromise is suspected. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
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