# symfony/security (Packagist) vulnerabilities

Source: https://junglewise.ai/threats/technologies/symfony-security  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/symfony-security.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 17 vulnerabilities in symfony/security (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-2017-11365, was published on 24 May 2022.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 17 (0 critical, 0 exploited in the wild)

## About symfony/security (Packagist)

Symfony component providing comprehensive security features including authentication, authorization, and session handling.

## Latest symfony/security (Packagist) vulnerabilities

- [CVE-2017-11365: Symfony Incorrect Access Control](https://junglewise.ai/threats/cve-2017-11365-symfony-incorrect-access-control) (low, CVSS 3, published 24 May 2022)
- [CVE-2012-6431: Symfony Allows URI Restrictions Bypass Via Double-Encoded String](https://junglewise.ai/threats/cve-2012-6431-symfony-allows-uri-restrictions-bypass-via-double-encoded-string) (info, published 17 May 2022)
- [CVE-2013-5958: Symfony Denial of Service Via Long Password Hashing](https://junglewise.ai/threats/cve-2013-5958-symfony-denial-of-service-via-long-password-hashing) (info, published 17 May 2022)
- [CVE-2016-4423: Symphony Denial of Service Via Overlong Usernames](https://junglewise.ai/threats/cve-2016-4423-symphony-denial-of-service-via-overlong-usernames) (low, CVSS 3, published 17 May 2022)
- [CVE-2016-1902: Symfony Cryptographic Vulnerability](https://junglewise.ai/threats/cve-2016-1902-symfony-cryptographic-vulnerability) (low, CVSS 3, published 17 May 2022)
- [CVE-2015-8125: Symfony Vulnerable to Timing Attack](https://junglewise.ai/threats/cve-2015-8125-symfony-vulnerable-to-timing-attack) (info, published 17 May 2022)
- [CVE-2018-11407: Symfony Authentication Bypass](https://junglewise.ai/threats/cve-2018-11407-symfony-authentication-bypass) (low, CVSS 3, published 14 May 2022)
- [CVE-2016-2403: Symfony Authentication Bypass](https://junglewise.ai/threats/cve-2016-2403-symfony-authentication-bypass) (low, CVSS 3, published 14 May 2022)
- [CVE-2015-8124: Symfony Session Fixation Vulnerability](https://junglewise.ai/threats/cve-2015-8124-symfony-session-fixation-vulnerability) (low, CVSS 3.1, published 14 May 2022)
- [CVE-2018-11385: Symfony Session Fixation Vulnerability](https://junglewise.ai/threats/cve-2018-11385-symfony-session-fixation-vulnerability) (low, CVSS 3, published 14 May 2022)
- [CVE-2017-16652: Symfony Open Redirect](https://junglewise.ai/threats/cve-2017-16652-symfony-open-redirect) (low, CVSS 3, published 14 May 2022)
- [CVE-2018-11406: Symfony CSRF Token Fixation](https://junglewise.ai/threats/cve-2018-11406-symfony-csrf-token-fixation) (low, CVSS 3, published 14 May 2022)
- [CVE-2018-19790: Symfony Open Redirect](https://junglewise.ai/threats/cve-2018-19790-symfony-open-redirect) (low, CVSS 3, published 14 May 2022)
- [CVE-2017-16653: Symfony CSRF Vulnerability](https://junglewise.ai/threats/cve-2017-16653-symfony-csrf-vulnerability) (low, CVSS 3, published 13 May 2022)
- [CVE-2021-21424: Prevent user enumeration using Guard or the new Authenticator-based Security](https://junglewise.ai/threats/cve-2021-21424-prevent-user-enumeration-using-guard-or-the-new-authenticator) (low, CVSS 3.1, published 13 May 2021)
- [CVE-2020-5275: Firewall configured with unanimous strategy was not actually unanimous in Symfony](https://junglewise.ai/threats/cve-2020-5275-firewall-configured-with-unanimous-strategy-was-not-actually) (low, CVSS 3.1, published 30 Mar 2020)
- [CVE-2019-10911: Improper authentication in Symfony](https://junglewise.ai/threats/cve-2019-10911-improper-authentication-in-symfony) (low, CVSS 3, published 12 Feb 2020)

## Most severe symfony/security (Packagist) vulnerabilities

- [CVE-2015-8124: Symfony Session Fixation Vulnerability](https://junglewise.ai/threats/cve-2015-8124-symfony-session-fixation-vulnerability) (low, CVSS 3.1, published 14 May 2022)
- [CVE-2021-21424: Prevent user enumeration using Guard or the new Authenticator-based Security](https://junglewise.ai/threats/cve-2021-21424-prevent-user-enumeration-using-guard-or-the-new-authenticator) (low, CVSS 3.1, published 13 May 2021)
- [CVE-2020-5275: Firewall configured with unanimous strategy was not actually unanimous in Symfony](https://junglewise.ai/threats/cve-2020-5275-firewall-configured-with-unanimous-strategy-was-not-actually) (low, CVSS 3.1, published 30 Mar 2020)
- [CVE-2016-2403: Symfony Authentication Bypass](https://junglewise.ai/threats/cve-2016-2403-symfony-authentication-bypass) (low, CVSS 3, published 14 May 2022)
- [CVE-2018-11407: Symfony Authentication Bypass](https://junglewise.ai/threats/cve-2018-11407-symfony-authentication-bypass) (low, CVSS 3, published 14 May 2022)
- [CVE-2018-11385: Symfony Session Fixation Vulnerability](https://junglewise.ai/threats/cve-2018-11385-symfony-session-fixation-vulnerability) (low, CVSS 3, published 14 May 2022)
- [CVE-2016-1902: Symfony Cryptographic Vulnerability](https://junglewise.ai/threats/cve-2016-1902-symfony-cryptographic-vulnerability) (low, CVSS 3, published 17 May 2022)
- [CVE-2017-11365: Symfony Incorrect Access Control](https://junglewise.ai/threats/cve-2017-11365-symfony-incorrect-access-control) (low, CVSS 3, published 24 May 2022)
- [CVE-2016-4423: Symphony Denial of Service Via Overlong Usernames](https://junglewise.ai/threats/cve-2016-4423-symphony-denial-of-service-via-overlong-usernames) (low, CVSS 3, published 17 May 2022)
- [CVE-2018-19790: Symfony Open Redirect](https://junglewise.ai/threats/cve-2018-19790-symfony-open-redirect) (low, CVSS 3, published 14 May 2022)

## 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, "symfony/security (Packagist) vulnerabilities", https://junglewise.ai/threats/technologies/symfony-security, 9 November 2026.