CVE-2026-6600 | langflow-ai langflow up to 1.8.3 Frontend React Component Rendering edit-message.tsx cross site scripting

VDB-358235 · SUBMIT #791923 · CVE-2026-6600 LANGFLOW-AI LANGFLOW UP TO 1.8.3 FRONTEND REACT COMPONENT RENDERING EDIT-MESSAGE.TSX CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.2 $0-$5k 1.93+ Summaryinfo A vulnerability has been found in langflow-ai langflow up to 1.8.3 and classified as problematic. This impacts an unknown function of the file src/frontend/src/modals/IOModal/components/chatView/chatMessage/components/edit-message.tsx of the component Frontend React Component Rendering. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-6600. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability was found in langflow-ai langflow up to 1.8.3. It has been rated as problematic. This issue affects an unknown part of the file src/frontend/src/modals/IOModal/components/chatView/chatMessage/components/edit-message.tsx of the component Frontend React Component Rendering. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. It is possible to read the advisory at gist.github.com. The identification of this vulnerability is CVE-2026-6600. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK. The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Artificial Intelligence Software Vendor langflow-ai Name langflow Version 1.8.0 1.8.1 1.8.2 1.8.3 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.5 VulDB Meta Temp Score: 3.2 VulDB Base Score: 3.5 VulDB Temp Score: 3.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/19/2026 Advisory disclosed 04/19/2026 +0 days VulDB entry created 04/19/2026 +0 days VulDB entry last update Sourcesinfo Advisory: gist.github.com Status: Not defined CVE: CVE-2026-6600 (🔒) GCVE (CVE): GCVE-0-2026-6600 GCVE (VulDB): GCVE-100-358235 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/19/2026 15:52 Changes: 04/19/2026 15:52 (57) Complete: 🔍 Submitter: Eric-f Cache ID: 99:46C:101 Submitinfo Accepted Submit #791923: Langflow <= 1.8.3 Stored Cross-Site Scripting (by Eric-f) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸