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Vulnerability details: VCID-ahmf-nthw-ufaq
Vulnerability ID VCID-ahmf-nthw-ufaq
Aliases CVE-2016-1902
GHSA-jjx5-fq5g-8xpc
Summary Cryptographic Issues The `nextBytes` function in the `SecureRandom` class in Symfony does not properly generate random numbers when used with PHP without the `paragonie/random_compat` library and the `openssl_random_pseudo_bytes` function fails, which makes it easier for attackers to defeat cryptographic protection mechanisms via unspecified vectors.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-310 Cryptographic Issues
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-332 Insufficient Entropy in PRNG
System Score Found at
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
epss 0.00397 https://api.first.org/data/v1/epss?cve=CVE-2016-1902
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-jjx5-fq5g-8xpc
cvssv3.1 7.5 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2016-1902.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2016-1902.yaml
cvssv3.1 7.5 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-1902.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-1902.yaml
cvssv3.1 7.5 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-1902.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-1902.yaml
cvssv3.1 7.5 https://github.com/symfony/symfony/pull/17359
generic_textual HIGH https://github.com/symfony/symfony/pull/17359
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2016-1902
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-1902
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-1902
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2016-1902
cvssv3.1 7.5 https://symfony.com/cve-2016-1902
generic_textual HIGH https://symfony.com/cve-2016-1902
cvssv3.1 7.5 https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom
generic_textual HIGH https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom
cvssv3.1 7.5 http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails
generic_textual HIGH http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails
cvssv3.1 7.5 http://www.debian.org/security/2016/dsa-3588
generic_textual HIGH http://www.debian.org/security/2016/dsa-3588
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2016-1902
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1902
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4423
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2016-1902.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-1902.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-1902.yaml
https://github.com/symfony/symfony/pull/17359
https://nvd.nist.gov/vuln/detail/CVE-2016-1902
https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom
https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom/
http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails
http://www.debian.org/security/2016/dsa-3588
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:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.10:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.11:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.11:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.12:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.12:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.2:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.3:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.4:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.5:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.6:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.7:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.7:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.8:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.8:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.9:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.6.9:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.2:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.3:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.4:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.5:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.6:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.7:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.7:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.7.8:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:2.7.8:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
CVE-2016-1902 https://symfony.com/cve-2016-1902
GHSA-jjx5-fq5g-8xpc https://github.com/advisories/GHSA-jjx5-fq5g-8xpc
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2016-1902.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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-1902.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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-1902.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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/symfony/symfony/pull/17359
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:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1902
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1902
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1902
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://symfony.com/cve-2016-1902
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at http://www.debian.org/security/2016/dsa-3588
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 0.6035
EPSS Score 0.00397
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:47:03.821672+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/security/CVE-2016-1902.yml 38.0.0