CVE-2026-40189 | patrickhener goshs up to 2.0.0-beta.3 ACL/basic-auth authorization (GHSA-wvhv-qcqf-f3cx)

VDB-356927 · CVE-2026-40189 · GHSA-WVHV-QCQF-F3CX PATRICKHENER GOSHS UP TO 2.0.0-BETA.3 ACL/BASIC-AUTH AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $0-$5k 0.65+ Summaryinfo A vulnerability marked as critical has been reported in patrickhener goshs up to 2.0.0-beta.3. Affected is an unknown function of the file ACL/basic-auth. The manipulation leads to authorization. This vulnerability is uniquely identified as CVE-2026-40189. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component. Detailsinfo A vulnerability was found in patrickhener goshs up to 2.0.0-beta.3 and classified as critical. This issue affects an unknown code of the file ACL/basic-auth. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is: goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.4, goshs enforces the documented per-folder .goshs ACL/basic-auth mechanism for directory listings and file reads, but it does not enforce the same authorization checks for state-changing routes. An unauthenticated attacker can upload files with PUT, upload files with multipart POST /upload, create directories with ?mkdir, and delete files with ?delete inside a .goshs-protected directory. By deleting the .goshs file itself, the attacker can remove the folder's auth policy and then access previously protected content without credentials. This results in a critical authorization bypass affecting confidentiality, integrity, and availability. This vulnerability is fixed in 2.0.0-beta.4. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-40189 since 04/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. Upgrading to version 2.0.0-beta.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch f212c4f4a126556bab008f79758e21a839ef2c0f 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. Productinfo Vendor patrickhener Name goshs Version 2.0.0-beta.0 2.0.0-beta.1 2.0.0-beta.2 2.0.0-beta.3 License open-source Website Product: https://github.com/patrickhener/goshs/ 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: 7.3 VulDB Meta Temp Score: 7.0 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 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: Authorization CWE: CWE-862 / CWE-863 / CWE-285 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: goshs 2.0.0-beta.4 Patch: f212c4f4a126556bab008f79758e21a839ef2c0f Timelineinfo 04/09/2026 CVE reserved 04/10/2026 +1 days Advisory disclosed 04/10/2026 +0 days VulDB entry created 04/10/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-wvhv-qcqf-f3cx Status: Confirmed CVE: CVE-2026-40189 (🔒) GCVE (CVE): GCVE-0-2026-40189 GCVE (VulDB): GCVE-100-356927 Entryinfo Created: 04/10/2026 22:28 Changes: 04/10/2026 22:28 (70) Complete: 🔍 Cache ID: 99:ADB:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸