Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
20 results
Sep 29, 2026Cross Site Scripting vulnerability in Greek Universities Network (GUnet) Open eClass Platform v.3.15 allows a remote attacker to execute arbitrary code via the CVE-2024-31027 · Other software · reported by MITREMedium 5.4
Cross Site Scripting vulnerability in Greek Universities Network (GUnet) Open eClass Platform v.3.15 allows a remote attacker to execute arbitrary code via the last name, first name, and username parameters in the user registration functionality.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpanagiotiscp.github.io
Sep 29, 2026An issue in Greek Universities Network (GUnet) Open eClass Platform v.3.15 allows a remote attacker to execute arbitrary code via the chat input field in the coCVE-2024-31026 · Other software · reported by MITRECritical 9.8
An issue in Greek Universities Network (GUnet) Open eClass Platform v.3.15 allows a remote attacker to execute arbitrary code via the chat input field in the course module.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpanagiotiscp.github.iopanagiotiscp.github.io
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24774 · Other software · gunet · reported by GitHubMedium 4.3
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a business logic vulnerability allows authenticated students to improperly mark themselves as present in attendance activities, including activities that have already expired, by directly accessing a crafted URL. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24773 · Other software · gunet · reported by GitHubHigh 7.5
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, an Insecure Direct Object Reference (IDOR) vulnerability allows unauthenticated remote attackers to access personal files of other users by directly requesting predictable user identifiers. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24674 · Other software · gunet · reported by GitHubMedium 4.7
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a Reflected Cross-Site Scripting (XSS) vulnerability allows remote attackers to execute arbitrary JavaScript in the context of authenticated users by crafting malicious URLs and tricking victims into visiting them. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24673 · Other software · gunet · reported by GitHubMedium 4.3
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a file upload validation bypass vulnerability allows attackers to upload files with prohibited extensions by embedding them inside ZIP archives and extracting them using the application’s built-in decompression functionality. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24672 · Other software · gunet · reported by GitHubHigh 7.3
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a Stored Cross-Site Scripting (XSS) vulnerability allows authenticated students to inject malicious JavaScript into user profile fields, which is executed when users with viewing privileges access affected application pages. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24671 · Other software · gunet · reported by GitHubMedium 6.1
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a Stored Cross-Site Scripting (XSS) vulnerability allows authenticated high-privileged users (teachers or administrators) to inject malicious JavaScript into multiple user-controllable input fields across the application, which is executed when other users access affected pages. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24670 · Other software · gunet · reported by GitHubMedium 6.5
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a broken access control vulnerability allows authenticated students to create new course units, an action normally restricted to higher-privileged roles. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24669 · Other software · gunet · reported by GitHubHigh 7.8
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, an insecure password reset mechanism allows local attackers to reuse a valid password reset token after it has already been used, enabling unauthorized password changes and potential account takeover. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24668 · Other software · gunet · reported by GitHubMedium 6.5
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a broken access control vulnerability allows authenticated students to add content to existing course units, an action normally restricted to higher-privileged roles. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24667 · Other software · gunet · reported by GitHubMedium 5
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, failure to invalidate active user sessions after a password change allows existing session tokens to remain valid, potentially enabling unauthorized continued access to user accounts. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24666 · Other software · gunet · reported by GitHubMedium 6.5
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a Cross-Site Request Forgery (CSRF) vulnerability in multiple teacher-restricted endpoints allows attackers to induce authenticated teachers to perform unintended actions, such as modifying assignment grades, via crafted requests. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24665 · Other software · gunet · reported by GitHubHigh 8.7
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a stored Cross-Site Scripting (XSS) vulnerability allows authenticated students to inject malicious JavaScript into uploaded assignment files, which is executed when instructors view the submission. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-24664 · Other software · gunet · reported by GitHubMedium 5.3
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a username enumeration vulnerability allows unauthenticated attackers to identify valid user accounts by analyzing differences in the login response behavior. This issue has been patched in version 4.2.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 8, 2026The Open eClass platform (formerly known as GUnet eClass) is a complete course management system.CVE-2026-22241 · Other software · gunet · reported by GitHubHigh 7.3
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, an arbitrary file upload vulnerability in the theme import functionality enables an attacker with administrative privileges to upload arbitrary files on the server's file system. The main cause of the issue is that no validation or sanitization of the file's present inside the zip archive. This leads to remote code execution on the web server. Version 4.2 patches the issue.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 12, 2024The Open eClass platform (formerly known as GUnet eClass) is a complete Course Management System.CVE-2024-38530 · Other software · gunet · reported by GitHubCritical 9.8
The Open eClass platform (formerly known as GUnet eClass) is a complete Course Management System. An arbitrary file upload vulnerability in the "save" functionality of the H5P module enables unauthenticated users to upload arbitrary files on the server's filesystem. This may lead in unrestricted RCE on the backend server, since the upload location is accessible from the internet. This vulnerability is fixed in 3.16.
- Product
- openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 27, 2022An issue in the jmpath variable in /modules/mindmap/index.php of GUnet Open eClass Platform (aka openeclass) v3.12.4 and below allows attackers to read arbitrarCVE-2022-33116 · Other software · Openeclass · reported by MITREMedium 6.5
An issue in the jmpath variable in /modules/mindmap/index.php of GUnet Open eClass Platform (aka openeclass) v3.12.4 and below allows attackers to read arbitrary files via a directory traversal.
- Product
- Openeclass
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordemaragkos.grgithub.com
Jun 11, 2022GUnet Open eClass (aka openeclass) before 3.12.2 allows XSS via the modules/auth/formuser.php auth parameter.CVE-2021-44266 · Other software · Gunet · reported by MITREMedium 6.1
GUnet Open eClass (aka openeclass) before 3.12.2 allows XSS via the modules/auth/formuser.php auth parameter.
- Product
- Open Eclass Platform
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.openeclass.orgemaragkos.gr
Aug 19, 2020GUnet Open eClass Platform (aka openeclass) before 3.11 might allow remote attackers to read students' submitted assessments because it does not ensure that theCVE-2020-24381 · Other software · Gunet · reported by MITREHigh 7.5
GUnet Open eClass Platform (aka openeclass) before 3.11 might allow remote attackers to read students' submitted assessments because it does not ensure that the web server blocks directory listings, and the data directory is inside the web root by default.
- Product
- Open Eclass Platform
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordemaragkos.grgithub.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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