CVE-2026-22560 | Rocket.Chat up to 8.3.x SAML Endpoint redirect

VDB-356912 · CVE-2026-22560 · EUVD-2026-21500 ROCKET.CHAT UP TO 8.3.X SAML ENDPOINT REDIRECT HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.4 $0-$5k 0.70+ Summaryinfo A vulnerability labeled as problematic has been found in Rocket.Chat up to 8.3.x. The affected element is an unknown function of the component SAML Endpoint. Such manipulation leads to redirect. This vulnerability is uniquely identified as CVE-2026-22560. The attack can be launched remotely. No exploit exists. The affected component should be upgraded. Detailsinfo A vulnerability was found in Rocket.Chat up to 8.3.x. It has been rated as problematic. Affected by this issue is an unknown part of the component SAML Endpoint. The manipulation with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. CVE summarizes: An open redirect vulnerability in Rocket.Chat versions prior to 8.4.0 allows users to be redirected to arbitrary URLs by manipulating parameters within a SAML endpoint. The advisory is shared for download at hackerone.com. This vulnerability is handled as CVE-2026-22560 since 01/07/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1204.001. Upgrading to version 8.4.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-21500). Productinfo Type Chat Software Name Rocket.Chat Version 8.0 8.1 8.2 8.3 License free CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.5 VulDB Meta Temp Score: 3.4 VulDB Base Score: 3.5 VulDB Temp Score: 3.4 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: Redirect CWE: CWE-601 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined 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: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Rocket.Chat 8.4.0 Patch: github.com Timelineinfo 01/07/2026 CVE reserved 04/10/2026 +92 days Advisory disclosed 04/10/2026 +0 days VulDB entry created 04/10/2026 +0 days VulDB entry last update Sourcesinfo Advisory: hackerone.com Status: Confirmed CVE: CVE-2026-22560 (🔒) GCVE (CVE): GCVE-0-2026-22560 GCVE (VulDB): GCVE-100-356912 EUVD: 🔒 Entryinfo Created: 04/10/2026 20:37 Updated: 04/10/2026 21:55 Changes: 04/10/2026 20:37 (56), 04/10/2026 21:55 (1) Complete: 🔍 Cache ID: 99:A60:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸