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.
18 results
Dec 12, 2025Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION CVE-2025-66284 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 4.8
Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1. A logged-in user can prepare a malicious page or URL, and an arbitrary script may be executed on the web browser when another user accesses it.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZIOCVE-2025-65120 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 5.1
Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025In GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1, "External page display restrictCVE-2025-64781 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 5.1
In GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1, "External page display restriction" is set to "Do not limit" in the initial configuration. With this configuration, the user may be redirected to an arbitrary website when accessing a specially crafted URL.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025SQL Injection vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3CVE-2025-62192 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 5.3
SQL Injection vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If exploited, information stored in the database may be obtained or altered by an authenticated user.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2.CVE-2025-61987 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 6.9
GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025In GroupSession, a Circular notice can be created with its memo field non-editable, but the authorization check is improperly implemented.CVE-2025-61950 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 5.3
In GroupSession, a Circular notice can be created with its memo field non-editable, but the authorization check is improperly implemented. With some crafted request, a logged-in user may alter the memo field. The affected products and versions are GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025Cross-site request forgery vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prCVE-2025-58576 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 5.1
Cross-site request forgery vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a malicious page while logged in, unintended operations may be performed.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZIOCVE-2025-57883 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 5.1
Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025Stored cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION pCVE-2025-54407 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 5.1
Stored cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 12, 2025Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION CVE-2025-53523 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 4.8
Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. A logged-in user can prepare a malicious page or URL, and an arbitrary script may be executed on the web browser when another user accesses it.
- Product
- GroupSession Free edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 24, 2021Path traversal vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and eaCVE-2021-20876 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 6.8
Path traversal vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows an attacker with an administrative privilege to obtain sensitive information stored in the hierarchy above the directory on the published site's server via unspecified vectors.
- Product
- GroupSession Free edition, GroupSession byCloud, GroupSession ZION
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 24, 2021Open redirect vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earCVE-2021-20875 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 6.1
Open redirect vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows a remote unauthenticated attacker to redirect users to arbitrary web sites and conduct phishing attacks by having a user to access a specially crafted URL.
- Product
- GroupSession Free edition, GroupSession byCloud, GroupSession ZION
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 24, 2021Incorrect permission assignment for critical resource vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlierCVE-2021-20874 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpHigh 7.5
Incorrect permission assignment for critical resource vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows a remote unauthenticated attacker to access arbitrary files on the server and obtain sensitive information via unspecified vectors.
- Product
- GroupSession Free edition, GroupSession byCloud, GroupSession ZION
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 30, 2021Open redirect vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to theCVE-2021-20789 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 6.1
Open redirect vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0) allows a remote attacker to redirect a user to an arbitrary web site and conduct a phishing attack via a specially crafted URL.
- Product
- GroupSession
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 30, 2021Server-side request forgery (SSRF) vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloudCVE-2021-20788 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 4.3
Server-side request forgery (SSRF) vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0) allows a remote authenticated attacker to conduct a port scan from the product and/or obtain information from the internal Web server.
- Product
- GroupSession
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 30, 2021Cross-site scripting vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3CVE-2021-20787 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 4.8
Cross-site scripting vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0) allows a remote attacker to inject an arbitrary script by sending a specially crafted request to a specific URL.
- Product
- GroupSession
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 30, 2021Cross-site request forgery (CSRF) vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud CVE-2021-20786 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 4.3
Cross-site request forgery (CSRF) vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0) allows a remote attacker to hijack the authentication of administrators via a specially crafted URL.
- Product
- GroupSession
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 30, 2021Cross-site scripting vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3CVE-2021-20785 · Other software · Japan Total System Co.,Ltd. · reported by vultures@jpcert.or.jpMedium 4.8
Cross-site scripting vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0) allows a remote attacker to inject an arbitrary script by sending a specially crafted request to a specific URL.
- Product
- GroupSession
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
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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