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Vulnerability details: VCID-nptm-yjp6-5bd9
Vulnerability ID VCID-nptm-yjp6-5bd9
Aliases CVE-2019-10909
GHSA-g996-q5r8-w7g2
Summary Symfony Cross-site Scripting (XSS) vulnerability In Symfony before 2.7.51, 2.8.x before 2.8.50, 3.x before 3.4.26, 4.x before 4.1.12, and 4.2.x before 4.2.7, validation messages are not escaped, which can lead to XSS when user input is included. This is related to symfony/framework-bundle.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00516 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
epss 0.00615 https://api.first.org/data/v1/epss?cve=CVE-2019-10909
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-g996-q5r8-w7g2
cvssv3.1 5.4 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2019-10909.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2019-10909.yaml
cvssv3.1 5.4 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2019-10909.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2019-10909.yaml
cvssv3.1 5.4 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/framework-bundle/CVE-2019-10909.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/framework-bundle/CVE-2019-10909.yaml
cvssv3.1 5.4 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-10909.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-10909.yaml
cvssv3.1 5.4 https://github.com/symfony/symfony/commit/ab4d05358c3d0dd1a36fc8c306829f68e3dd84e2
generic_textual MODERATE https://github.com/symfony/symfony/commit/ab4d05358c3d0dd1a36fc8c306829f68e3dd84e2
cvssv2 3.5 https://nvd.nist.gov/vuln/detail/CVE-2019-10909
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2019-10909
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2019-10909
cvssv3.1 5.4 https://symfony.com/blog/cve-2019-10909-escape-validation-messages-in-the-php-templating-engine
generic_textual MODERATE https://symfony.com/blog/cve-2019-10909-escape-validation-messages-in-the-php-templating-engine
cvssv3.1 5.4 https://symfony.com/cve-2019-10909
generic_textual MODERATE https://symfony.com/cve-2019-10909
cvssv3.1 5.4 https://www.drupal.org/sa-core-2019-005
generic_textual MODERATE https://www.drupal.org/sa-core-2019-005
cvssv3.1 5.4 https://www.synology.com/security/advisory/Synology_SA_19_19
generic_textual MODERATE https://www.synology.com/security/advisory/Synology_SA_19_19
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-10909
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14773
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19789
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19790
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10909
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10910
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10911
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10912
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10913
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2019-10909.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2019-10909.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/framework-bundle/CVE-2019-10909.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-10909.yaml
https://github.com/symfony/symfony/commit/ab4d05358c3d0dd1a36fc8c306829f68e3dd84e2
https://nvd.nist.gov/vuln/detail/CVE-2019-10909
https://symfony.com/blog/cve-2019-10909-escape-validation-messages-in-the-php-templating-engine
https://symfony.com/cve-2019-10909
https://www.drupal.org/sa-core-2019-005
https://www.synology.com/security/advisory/Synology_SA_19_19
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
GHSA-g996-q5r8-w7g2 https://github.com/advisories/GHSA-g996-q5r8-w7g2
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2019-10909.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2019-10909.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/framework-bundle/CVE-2019-10909.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-10909.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/symfony/symfony/commit/ab4d05358c3d0dd1a36fc8c306829f68e3dd84e2
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-10909
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-10909
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://symfony.com/blog/cve-2019-10909-escape-validation-messages-in-the-php-templating-engine
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://symfony.com/cve-2019-10909
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://www.drupal.org/sa-core-2019-005
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://www.synology.com/security/advisory/Synology_SA_19_19
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.65719
EPSS Score 0.00516
Published At Sept. 9, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:58:05.637467+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/11/GHSA-g996-q5r8-w7g2/GHSA-g996-q5r8-w7g2.json 37.0.0