CVE-2026-30879 | baserproject basercms up to 5.2.2 Blog Post cross site scripting (GHSA-jmq3-x8q7-j9qm)

VDB-354325 · CVE-2026-30879 · GHSA-JMQ3-X8Q7-J9QM BASERPROJECT BASERCMS UP TO 5.2.2 BLOG POST CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 2.30+ Summaryinfo A vulnerability classified as problematic has been found in baserproject basercms up to 5.2.2. This issue affects some unknown processing of the component Blog Post Handler. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2026-30879. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability has been found in baserproject basercms up to 5.2.2 and classified as problematic. Affected by this vulnerability is some unknown processing of the component Blog Post Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is: baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3. The advisory is shared at github.com. This vulnerability is known as CVE-2026-30879 since 03/06/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue. Upgrading to version 5.2.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Productinfo Type Content Management System Vendor baserproject Name basercms Version 5.2.0 5.2.1 5.2.2 License open-source Website Product: https://github.com/baserproject/basercms/ 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: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 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: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 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: basercms 5.2.3 Timelineinfo 03/06/2026 CVE reserved 03/31/2026 +24 days Advisory disclosed 03/31/2026 +0 days VulDB entry created 03/31/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-jmq3-x8q7-j9qm Status: Confirmed CVE: CVE-2026-30879 (🔒) GCVE (CVE): GCVE-0-2026-30879 GCVE (VulDB): GCVE-100-354325 Entryinfo Created: 03/31/2026 08:17 Changes: 03/31/2026 08:17 (70) Complete: 🔍 Cache ID: 99:755:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸