IBM Langflow OSS Code Execution and Info Disclosure

Remote code execution can result in IBM Langflow OSS 1.0.0 through 1.12.2 through a dependency confusion weakness, where the product resolves an expected dependency from a public package registry instead of the intended trusted source. The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates an unauthenticated remote attacker with no user interaction required, and the unpatched severity is rated 9.8; however, our independent assessment lowers the attack complexity to AC:H because successful exploitation depends on the attacker knowing or guessing the exact dependency name and on the victim's resolver preferring an attacker-published public package over the legitimate one, typically during an install, build, or import event rather than against a running service. There is no confirmed active exploitation (CISA KEV does not list this CVE), SSVC records Exploitation: none and Automatable: no, no public exploit code has been identified at time of analysis, and EPSS is only 0.68% (51st percentile), so the practical near-term risk is materially lower than the 9.8 headline suggests. A vendor patch is available per the IBM advisory.

Unauthenticated remote code execution in IBM Langflow OSS 1.0.0 through 1.12.2 lets any attacker who can reach the service execute arbitrary operating system commands on the underlying host. Rated CVSS 3.1 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), the flaw requires no credentials, no user interaction, and no non-default configuration, so a default Langflow deployment exposed beyond localhost is directly exploitable. There is no public exploit identified at time of analysis and no confirmed active exploitation (CISA KEV); IBM has published a vendor advisory with a fix, and practical risk is concentrated in self-hosted developer instances that are bound to reachable interfaces rather than being restricted to localhost or placed behind authentication and firewalling.

Authenticated code injection in IBM Langflow OSS 1.0.0 through 1.12.2 lets any remote user holding a valid low-privileged account execute arbitrary code on the hosting server, with high impact to confidentiality, integrity, and availability (CVSS 8.8, PR:L, no user interaction required). The attack surface is the code path where special elements used in code are not properly neutralized (CWE-94), so deployments that allow untrusted or self-registered accounts to author and run flows are the most exposed, while instances with closed registration and no internet exposure are materially less at risk. No public exploit code has been identified at time of analysis, EPSS is only 0.58% (46th percentile), and CISA SSVC rates exploitation as 'none', making this a serious-but-not-emergency issue; a vendor patch is available per IBM's advisory.

Authenticated remote code execution affects IBM Langflow OSS 1.0.0 through 1.12.2, where improper control of code generation lets any account with at least low privileges (CVSS PR:L, AV:N, UI:N) cause attacker-supplied code to run server-side on the Langflow host, yielding high confidentiality, integrity, and availability impact (CVSS 8.8). Exploitation is not possible against a default install without valid credentials, and no public exploit code or confirmed active exploitation was identified at time of analysis. The practical exposure therefore concentrates on internet-reachable or multi-tenant instances that permit self-registration or host untrusted users; isolated, single-tenant, network-restricted deployments with trusted operators carry substantially lower risk.

Remote code execution in IBM Langflow OSS 1.0.0 through 1.12.2 lets a remote attacker who already holds a valid low-privilege session execute arbitrary code on the host by sending a crafted request that bypasses improper input validation. The flaw is network-reachable, low complexity, and requires no user interaction (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, 8.8), so the authentication requirement is the main barrier; deployments with open or self-service sign-up, internet exposure, or multi-tenant use carry the highest risk. No public exploit code was identified at time of analysis and the issue is not confirmed as actively exploited (no CISA KEV listing); the vendor has released a fix.

Remote code execution in IBM Langflow OSS versions 1.0.0 through 1.12.2 allows an authenticated attacker with flow-authoring privileges to inject and execute arbitrary code through Langflow's code-generation mechanism (CWE-94). The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) rates this as high severity (8.8), requiring network reachability, low privileges, and no user interaction; however, in typical deployments where flow creation or modification is broadly granted, the practical barrier may be lower than the PR:L metric implies. No public exploit code or CISA KEV entry has been identified at time of analysis, and EPSS is 0.61% (48th percentile); IBM has released a vendor patch.

Authenticated remote code execution in IBM Langflow OSS 1.0.0 through 1.12.2 allows a low-privileged user to run arbitrary code because the platform improperly controls generation of executable code (CWE-94). Exploitation requires only a valid account on the instance (CVSS PR:L, AV:N, AC:L, UI:N), so an attacker who holds or obtains any credential able to create, import, or execute a flow/component that reaches the vulnerable code-generation path can achieve full confidentiality, integrity, and availability impact on the host. No public exploit code was identified at time of analysis, CISA's SSVC assessment records exploitation as "none", and EPSS is 0.58% (46th percentile), placing this as a genuinely serious but not emergency-tier issue whose real-world risk scales with how exposed the Langflow instance is and how freely low-privilege accounts are provisioned.

Remote code execution affects IBM Langflow OSS versions 1.0.0 through 1.12.2, where improper access control lets an attacker with a valid low-privilege account execute arbitrary code on the server. The flaw is network-reachable with low attack complexity and no user interaction (CVSS 3.1: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 8.8), but it is gated by the requirement to hold an authenticated account, so exposure is greatest where the platform offers open self-service registration, uses shared credentials, or is internet-facing without network restrictions. No public exploit code has been identified and the issue is not listed as confirmed actively exploited (CISA KEV) at time of analysis; exploitation status and patch availability should be re-checked against the IBM advisory.

Sensitive information disclosure in IBM Langflow OSS 1.0.0 through 1.12.2 allows a remote, low-privilege authenticated attacker to retrieve objects belonging to other users by manipulating a user-controlled identifier that the application fails to scope to the requesting principal (CWE-639, IDOR-style authorization bypass). The flaw is network-reachable with low attack complexity and no user interaction, but it is gated on the attacker already holding valid credentials for a low-privilege account (CVSS PR:L); the assessed impact is a high-confidentiality, read-only exposure with no demonstrated integrity or availability effect, so realistic risk concentrates in multi-user or multi-tenant Langflow deployments where a low-trust account can reach another tenant's or user's data. Patch available per vendor advisory (IBM support node 7290694); no public exploit identified at time of analysis.

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. No public exploit code has been identified at time of analysis and the issue is not listed as confirmed actively exploited (CISA KEV).

Path traversal in IBM Langflow OSS 1.0.0 through 1.12.2 allows an authenticated remote attacker to read files outside the intended directory, causing high-impact confidentiality loss (CVSS 6.5, C:H/I:N/A:N) without modifying data or disrupting service. Exploitation requires low-privileged credentials (PR:L) but is network-reachable, low-complexity, and needs no user interaction, so multi-tenant or self-registration deployments face elevated risk because obtaining an account is trivial; the flaw is a moderate-severity information-disclosure issue with middle-tier real-world priority. No public exploit code or confirmed active exploitation is identified at time of analysis, and IBM has published a vendor patch advisory.

Information disclosure in IBM Langflow OSS 1.0.0 through 1.12.2 allows a remote, authenticated attacker holding only low-privilege credentials to obtain sensitive information that should not be reachable from their account, resulting in a high confidentiality impact with no effect on integrity or availability. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N) confirms credentials are required and that no user interaction is needed, while the scope-change metric indicates the exposed data can affect resources beyond the vulnerable component itself. Patch available per vendor advisory; no public exploit identified at time of analysis, and no CISA KEV or EPSS signal was provided. This is a credible mid-tier priority rather than an emergency, and the practical risk hinges on how many low-privilege accounts exist and whether the instance is reachable from untrusted networks.

Path traversal in IBM Langflow OSS 1.0.0 through 1.12.2 lets a remote attacker who holds a valid Langflow account read files outside the intended restricted directory, exposing sensitive data at high confidentiality impact (CVSS 6.5, CWE-22). The flaw is network-reachable, low-complexity and requires no victim interaction, but it cannot be triggered anonymously: the CVSS vector (PR:L) means the attacker must already be able to authenticate to the instance, so risk concentrates on internet-exposed or multi-tenant deployments with loose account provisioning. IBM has published a vendor patch (referenced in its support advisory), and no public exploit code was identified at time of analysis; no KEV listing was provided in the intelligence for this CVE.

Authenticated users of IBM Langflow OSS 1.0.0 through 1.12.2 can exhaust server resources by supplying a crafted ZIP archive to a code path that performs extraction, degrading or halting availability of the affected instance (CVSS 3.1 base 4.3, CWE-400). The flaw is reachable over the network by a low-privilege authenticated attacker (AV:N/PR:L/UI:N) and is limited to availability impact (C:N/I:N/A:L), with no data exposure, integrity loss, or code execution demonstrated. This is a low-to-moderate priority issue, not an urgent one: it is not confirmed as actively exploited (no CISA KEV listing) and no public exploit code has been identified at time of analysis, though the mandatory credential requirement means exposure is confined to deployments with reachable ZIP-extraction functionality.