# october/backend (Packagist) vulnerabilities Source: https://junglewise.ai/threats/technologies/october-backend Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/october-backend.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 7 vulnerabilities in october/backend (Packagist): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2021-21265, was published on 10 March 2021. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 7 (0 critical, 0 exploited in the wild) ## About october/backend (Packagist) Backend administration interface component for the October CMS platform. ## Latest october/backend (Packagist) vulnerabilities - [CVE-2021-21265: October CMS vulnerable to Potential Host Header Poisoning on misconfigured servers](https://junglewise.ai/threats/cve-2021-21265-october-cms-vulnerable-to-potential-host-header-poisoning-on) (info, published 10 Mar 2021) - [CVE-2020-15249: Stored XSS by authenticated backend user with access to upload files](https://junglewise.ai/threats/cve-2020-15249-stored-xss-by-authenticated-backend-user-with-access-to-upload) (low, CVSS 3.1, published 23 Nov 2020) - [CVE-2020-15248: Privilege escalation by backend users assigned to the default "Publisher" system role](https://junglewise.ai/threats/cve-2020-15248-privilege-escalation-by-backend-users-assigned-to-the-default) (low, CVSS 3.1, published 23 Nov 2020) - [CVE-2020-11083: Stored XSS in October](https://junglewise.ai/threats/cve-2020-11083-stored-xss-in-october) (low, CVSS 3.1, published 5 Aug 2020) - [CVE-2020-4061: Cross-site Scripting in October](https://junglewise.ai/threats/cve-2020-4061-cross-site-scripting-in-october) (low, CVSS 3.1, published 2 Jul 2020) - [CVE-2020-5299: Potential CSV Injection vector in OctoberCMS](https://junglewise.ai/threats/cve-2020-5299-potential-csv-injection-vector-in-octobercms) (low, CVSS 3.1, published 3 Jun 2020) - [CVE-2020-5298: Reflected XSS when importing CSV in OctoberCMS](https://junglewise.ai/threats/cve-2020-5298-reflected-xss-when-importing-csv-in-octobercms) (low, CVSS 3.1, published 3 Jun 2020) ## Most severe october/backend (Packagist) vulnerabilities - [CVE-2020-11083: Stored XSS in October](https://junglewise.ai/threats/cve-2020-11083-stored-xss-in-october) (low, CVSS 3.1, published 5 Aug 2020) - [CVE-2020-5299: Potential CSV Injection vector in OctoberCMS](https://junglewise.ai/threats/cve-2020-5299-potential-csv-injection-vector-in-octobercms) (low, CVSS 3.1, published 3 Jun 2020) - [CVE-2020-5298: Reflected XSS when importing CSV in OctoberCMS](https://junglewise.ai/threats/cve-2020-5298-reflected-xss-when-importing-csv-in-octobercms) (low, CVSS 3.1, published 3 Jun 2020) - [CVE-2020-4061: Cross-site Scripting in October](https://junglewise.ai/threats/cve-2020-4061-cross-site-scripting-in-october) (low, CVSS 3.1, published 2 Jul 2020) - [CVE-2020-15249: Stored XSS by authenticated backend user with access to upload files](https://junglewise.ai/threats/cve-2020-15249-stored-xss-by-authenticated-backend-user-with-access-to-upload) (low, CVSS 3.1, published 23 Nov 2020) - [CVE-2020-15248: Privilege escalation by backend users assigned to the default "Publisher" system role](https://junglewise.ai/threats/cve-2020-15248-privilege-escalation-by-backend-users-assigned-to-the-default) (low, CVSS 3.1, published 23 Nov 2020) - [CVE-2021-21265: October CMS vulnerable to Potential Host Header Poisoning on misconfigured servers](https://junglewise.ai/threats/cve-2021-21265-october-cms-vulnerable-to-potential-host-header-poisoning-on) (info, published 10 Mar 2021) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Packagist technologies - [moodle/moodle (Packagist)](https://junglewise.ai/threats/technologies/moodle-moodle): 434 vulnerabilities - [magento/community-edition (Packagist)](https://junglewise.ai/threats/technologies/packagist-magento-community-edition): 362 vulnerabilities - [typo3/cms (Packagist)](https://junglewise.ai/threats/technologies/packagist-typo3-cms): 187 vulnerabilities - [wwbn/avideo (Packagist)](https://junglewise.ai/threats/technologies/wwbn-avideo): 164 vulnerabilities - [magento/project-community-edition (Packagist)](https://junglewise.ai/threats/technologies/magento-project-community-edition): 161 vulnerabilities - [drupal/core (Packagist)](https://junglewise.ai/threats/technologies/packagist-drupal-core): 150 vulnerabilities - [pimcore/pimcore (Packagist)](https://junglewise.ai/threats/technologies/pimcore-pimcore): 145 vulnerabilities - [craftcms/cms (Packagist)](https://junglewise.ai/threats/technologies/craftcms-cms): 143 vulnerabilities - [dolibarr/dolibarr (Packagist)](https://junglewise.ai/threats/technologies/dolibarr-dolibarr): 127 vulnerabilities - [getgrav/grav (Packagist)](https://junglewise.ai/threats/technologies/getgrav-grav): 127 vulnerabilities - [typo3/cms-core (Packagist)](https://junglewise.ai/threats/technologies/typo3-cms-core): 127 vulnerabilities - [concrete5/concrete5 (Packagist)](https://junglewise.ai/threats/technologies/concrete5-concrete5): 122 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "october/backend (Packagist) vulnerabilities", https://junglewise.ai/threats/technologies/october-backend, 9 November 2026.