CVE-2026-40866 | horilla-opensource horilla 1.5.0 Employee Document Upload Endpoint access control

VDB-358557 · CVE-2026-40866 · GCVE-0-2026-40866 HORILLA-OPENSOURCE HORILLA 1.5.0 EMPLOYEE DOCUMENT UPLOAD ENDPOINT ACCESS CONTROL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.3 $0-$5k 0.87+ Summaryinfo A vulnerability has been found in horilla-opensource horilla 1.5.0 and classified as critical. Affected by this issue is some unknown functionality of the component Employee Document Upload Endpoint. Performing a manipulation results in access control. This vulnerability is reported as CVE-2026-40866. The attack is possible to be carried out remotely. No exploit exists. Detailsinfo A vulnerability was found in horilla-opensource horilla 1.5.0. It has been classified as critical. This affects an unknown part of the component Employee Document Upload Endpoint. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: Horilla is a free and open source Human Resource Management System (HRMS). In 1.5.0, an insecure direct object reference in the employee document upload endpoint allows any authenticated user to overwrite or replace or corrupt another employee’s document by changing the document ID in the upload request. This enables unauthorized modification of HR records. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-40866 since 04/15/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/21/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor horilla-opensource Name horilla Version 1.5.0 CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.3 VulDB Base Score: 6.3 VulDB Temp Score: 6.3 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: Access control CWE: 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: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/15/2026 CVE reserved 04/21/2026 +6 days Advisory disclosed 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Status: Confirmed CVE: CVE-2026-40866 (🔒) GCVE (CVE): GCVE-0-2026-40866 GCVE (VulDB): GCVE-100-358557 Entryinfo Created: 04/21/2026 20:57 Changes: 04/21/2026 20:57 (65) Complete: 🔍 Cache ID: 99:235:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸