CVE-2026-41243 | siemvk OpenLearn access control (GHSA-4rv3-hfh6-vqvm)

VDB-359105 · CVE-2026-41243 · GHSA-4RV3-HFH6-VQVM SIEMVK OPENLEARN ACCESS CONTROL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $0-$5k 1.42+ Summaryinfo A vulnerability was found in siemvk OpenLearn. It has been classified as critical. Affected is an unknown function. The manipulation leads to access control. This vulnerability is referenced as CVE-2026-41243. Remote exploitation of the attack is possible. No exploit is available. It is suggested to install a patch to address this issue. Detailsinfo A vulnerability was found in siemvk OpenLearn (unknown version) and classified as critical. This issue affects an unknown code block. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is: OpenLearn is open-source educational forum software. Prior to commit 844b2a40a69d0c4911580fe501923f0b391313ab, when `safeMode` is enabled, unapproved forum posts are hidden from the public list, but the direct post-read procedure still returns the full post to anyone with the post UUID. Commit 844b2a40a69d0c4911580fe501923f0b391313ab fixes the issue. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-41243 since 04/18/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue. Applying the patch 844b2a40a69d0c4911580fe501923f0b391313ab is able to eliminate this problem. The bugfix is ready for download at github.com. Productinfo Vendor siemvk Name OpenLearn License open-source Website Product: https://github.com/siemvk/OpenLearn/ 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: 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: Patch Status: 🔍 0-Day Time: 🔒 Patch: 844b2a40a69d0c4911580fe501923f0b391313ab Timelineinfo 04/18/2026 CVE reserved 04/23/2026 +5 days Advisory disclosed 04/23/2026 +0 days VulDB entry created 04/23/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-4rv3-hfh6-vqvm Status: Confirmed CVE: CVE-2026-41243 (🔒) GCVE (CVE): GCVE-0-2026-41243 GCVE (VulDB): GCVE-100-359105 Entryinfo Created: 04/23/2026 07:15 Changes: 04/23/2026 07:15 (67) Complete: 🔍 Cache ID: 99:4E0:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸