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CVE-2017-16652

22
FAUCET Score

CVE-2017-16652 is an open redirect vulnerability affecting specific versions of Symfony (2.7.x, 2.8.x, 3.2.x, 3.3.x) and related Debian packages. The flaw allows an attacker to manipulate the _target_path parameter in authentication handlers to redirect users to arbitrary external domains. This vulnerability carries a CVSS score of 6.1 (Medium) due to its network-based attack vector and reliance on user interaction, potentially leading to phishing attacks and limited impact on confidentiality and integrity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
> 2.7.0, < 2.7.38CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
> 2.8.0, < 2.8.31CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
> 3.2.0, < 3.2.14CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.3.13CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 70th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 2.7.38
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 2.8.31
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 3.2.14
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 3.3.13
composerpatch availablevia ghsa
Product: symfony/security-httpFixed in: 2.7.38
composerpatch availablevia ghsa
Product: symfony/security-httpFixed in: 2.8.31
composerpatch availablevia ghsa
Product: symfony/security-httpFixed in: 3.2.14
composerpatch availablevia ghsa
Product: symfony/security-httpFixed in: 3.3.13
composerpatch availablevia ghsa
Product: symfony/securityFixed in: 2.7.38
composerpatch availablevia ghsa
Product: symfony/securityFixed in: 2.8.31
composerpatch availablevia ghsa
Product: symfony/securityFixed in: 3.2.14
composerpatch availablevia ghsa
Product: symfony/securityFixed in: 3.3.13

Vendor Advisories (1)

composerGHSA-r7p7-qr7p-2rrfmedium

Symfony Open Redirect

May 14, 2022

References

lists.debian.org / debian-lts-announce/2019/03/msg00009.html
Third Party Advisory
symfony.com / blog/cve-2017-16652-open-redirect-vulnerability-on-security-handlers
Vendor Advisory