CVE-2026-39889 | MervinPraison PraisonAI up to 4.5.114 Endpoint /a2u/ create_a2u_routes information disclosure (GHSA-f292-66h9-fpmf)

VDB-356487 · CVE-2026-39889 · GHSA-F292-66H9-FPMF MERVINPRAISON PRAISONAI UP TO 4.5.114 ENDPOINT /A2U/ CREATE_A2U_ROUTES INFORMATION DISCLOSURE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.3 $0-$5k 0.80+ Summaryinfo A vulnerability was found in MervinPraison PraisonAI up to 4.5.114. It has been classified as problematic. Affected is the function create_a2u_routes of the file /a2u/ of the component Endpoint. Performing a manipulation results in information disclosure. This vulnerability is reported as CVE-2026-39889. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended. Detailsinfo A vulnerability was found in MervinPraison PraisonAI up to 4.5.114. It has been classified as problematic. This affects the function create_a2u_routes of the file /a2u/ of the component Endpoint. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is: PraisonAI is a multi-agent teams system. Prior to 4.5.115, the A2U (Agent-to-User) event stream server in PraisonAI exposes all agent activity without authentication. The create_a2u_routes() function registers the following endpoints with NO authentication checks: /a2u/info, /a2u/subscribe, /a2u/events/{stream_name}, /a2u/events/sub/{id}, and /a2u/health. This vulnerability is fixed in 4.5.115. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-39889 since 04/07/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK. Upgrading to version 4.5.115 eliminates this vulnerability. Productinfo Vendor MervinPraison Name PraisonAI Version 4.5.114 Website Product: https://github.com/MervinPraison/PraisonAI/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.4 VulDB Meta Temp Score: 6.3 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.5 CNA Vector (GitHub_M): 🔒 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: Information disclosure CWE: CWE-200 / CWE-284 / CWE-266 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: PraisonAI 4.5.115 Timelineinfo 04/07/2026 CVE reserved 04/09/2026 +2 days Advisory disclosed 04/09/2026 +0 days VulDB entry created 04/09/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-f292-66h9-fpmf Status: Confirmed CVE: CVE-2026-39889 (🔒) GCVE (CVE): GCVE-0-2026-39889 GCVE (VulDB): GCVE-100-356487 Entryinfo Created: 04/09/2026 02:48 Changes: 04/09/2026 02:48 (67) Complete: 🔍 Cache ID: 99:3A9:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸