Quick Cms
Monthly
Unsafe PHP deserialization in Quick.CMS by OpenSolution lets an on-path attacker who can tamper with the plaintext HTTP channel inject malicious serialized objects that are deserialized when an administrator opens the admin panel, yielding arbitrary code execution on the server. The CVSS 4.0 vector (AV:A/AC:L/AT:P/PR:N/UI:P) reflects that exploitation requires adjacent-network MITM positioning plus an administrator session, and no public exploit identified at time of analysis. CERT-PL reported the issue and OpenSolution shipped a patch for version 6.8 on 14.05.2026 that mitigates the flaw by forcing HTTPS.
Quick.CMS 6.7 contains a cross-site scripting vulnerability in the sliders form that allows authenticated attackers to inject malicious scripts by submitting XSS payloads through the sDescription. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A vulnerability exists in QuickCMS version 6.8 where sensitive admin credentials are hardcoded in a configuration file and stored in plaintext. Rated medium severity (CVSS 6.9), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to multiple Stored XSS in language editor functionality (languages). Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Stored cross-site scripting in the slider editor (sliders-form) of OpenSolution Quick.Cms lets an authenticated administrator inject arbitrary HTML and JavaScript that is persisted and rendered on every page of the site. The flaw is notable as a bypass of an intended restriction: by default admin users are not supposed to be able to add JavaScript to the website, so the slider editor provides a route around that control. Realistic risk is limited because exploitation requires a pre-existing admin account (PR:H) and a victim must subsequently load an affected page (UI:P); only version 6.8 has been tested and confirmed vulnerable, vulnerability applicability to other versions is unverified, EPSS is low at 0.19% (8th percentile), and no public exploit code or active exploitation has been identified at time of analysis.
Stored cross-site scripting in the Quick.Cms page editor (pages-form) allows an authenticated administrator to inject arbitrary HTML and JavaScript that is persisted and then executed in the browser of any user who later visits the edited page. Only version 6.8 has been tested and confirmed vulnerable; the vendor was notified early but did not respond with vulnerability details or an affected version range, so other versions remain untested and may also be affected. A key limiting factor noted by the researcher is that Quick.Cms by default does not allow the admin user to insert JavaScript into the site, meaning full script execution likely depends on a non-default configuration that permits raw HTML/script entry; EPSS is low at 0.19% (8th percentile), and no public exploit code or confirmed active exploitation was identified at time of analysis.
QuickCMS is vulnerable to Reflected XSS via sLangEdit parameter in admin's panel functionality. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Stored XSS via aDirFilesDescriptions parameter in files editor functionality. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Stored XSS via sDescriptionMeta parameter in page editor SEO functionality. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS sends password and login via GET Request. Rated medium severity (CVSS 6.9), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Cross-Site Request Forgery in page deletion functionality. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Reflected XSS via sSort parameter in admin's panel functionality. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Cross-Site Request Forgery in article creation functionality. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Stored XSS in sTitle parameter in page editor functionality. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Backend - Dashboard parameter in the Languages. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Content - Name parameter in the Pages Menu. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the SEO - Meta description parameter in the Pages. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Languages Menu component. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Files - Description parameter in the Pages Menu. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Open Solution Quick.Cms 5.0 and Quick.Cart 6.0, possibly as downloaded before December 19, 2012, allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to admin.php.
Cross-site scripting (XSS) vulnerability in the default index page in admin/ in Quick.CMS 4.0 allows remote attackers to inject arbitrary web script or HTML via the p parameter. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.
Unsafe PHP deserialization in Quick.CMS by OpenSolution lets an on-path attacker who can tamper with the plaintext HTTP channel inject malicious serialized objects that are deserialized when an administrator opens the admin panel, yielding arbitrary code execution on the server. The CVSS 4.0 vector (AV:A/AC:L/AT:P/PR:N/UI:P) reflects that exploitation requires adjacent-network MITM positioning plus an administrator session, and no public exploit identified at time of analysis. CERT-PL reported the issue and OpenSolution shipped a patch for version 6.8 on 14.05.2026 that mitigates the flaw by forcing HTTPS.
Quick.CMS 6.7 contains a cross-site scripting vulnerability in the sliders form that allows authenticated attackers to inject malicious scripts by submitting XSS payloads through the sDescription. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A vulnerability exists in QuickCMS version 6.8 where sensitive admin credentials are hardcoded in a configuration file and stored in plaintext. Rated medium severity (CVSS 6.9), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to multiple Stored XSS in language editor functionality (languages). Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Stored cross-site scripting in the slider editor (sliders-form) of OpenSolution Quick.Cms lets an authenticated administrator inject arbitrary HTML and JavaScript that is persisted and rendered on every page of the site. The flaw is notable as a bypass of an intended restriction: by default admin users are not supposed to be able to add JavaScript to the website, so the slider editor provides a route around that control. Realistic risk is limited because exploitation requires a pre-existing admin account (PR:H) and a victim must subsequently load an affected page (UI:P); only version 6.8 has been tested and confirmed vulnerable, vulnerability applicability to other versions is unverified, EPSS is low at 0.19% (8th percentile), and no public exploit code or active exploitation has been identified at time of analysis.
Stored cross-site scripting in the Quick.Cms page editor (pages-form) allows an authenticated administrator to inject arbitrary HTML and JavaScript that is persisted and then executed in the browser of any user who later visits the edited page. Only version 6.8 has been tested and confirmed vulnerable; the vendor was notified early but did not respond with vulnerability details or an affected version range, so other versions remain untested and may also be affected. A key limiting factor noted by the researcher is that Quick.Cms by default does not allow the admin user to insert JavaScript into the site, meaning full script execution likely depends on a non-default configuration that permits raw HTML/script entry; EPSS is low at 0.19% (8th percentile), and no public exploit code or confirmed active exploitation was identified at time of analysis.
QuickCMS is vulnerable to Reflected XSS via sLangEdit parameter in admin's panel functionality. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Stored XSS via aDirFilesDescriptions parameter in files editor functionality. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Stored XSS via sDescriptionMeta parameter in page editor SEO functionality. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS sends password and login via GET Request. Rated medium severity (CVSS 6.9), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Cross-Site Request Forgery in page deletion functionality. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Reflected XSS via sSort parameter in admin's panel functionality. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Cross-Site Request Forgery in article creation functionality. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QuickCMS is vulnerable to Stored XSS in sTitle parameter in page editor functionality. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Backend - Dashboard parameter in the Languages. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Content - Name parameter in the Pages Menu. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the SEO - Meta description parameter in the Pages. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Languages Menu component. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the Files - Description parameter in the Pages Menu. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Open Solution Quick.Cms 5.0 and Quick.Cart 6.0, possibly as downloaded before December 19, 2012, allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to admin.php.
Cross-site scripting (XSS) vulnerability in the default index page in admin/ in Quick.CMS 4.0 allows remote attackers to inject arbitrary web script or HTML via the p parameter. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.