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CVE-2017-16654

26
FAUCET Score

CVE-2017-16654 is a directory traversal vulnerability affecting multiple versions of Symfony, including those before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. An unauthenticated attacker can exploit this by manipulating the locale argument in the Intl component to access arbitrary files on the local filesystem. Rated as high severity (CVSS 7.5), this vulnerability allows for sensitive information disclosure with low attack complexity and no user interaction required. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.7.0, <= 2.7.37CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 3.2.0, <= 3.2.13CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 3.3.0, <= 3.3.12CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 3.8.0, <= 3.8.30CPE 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

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.68%
Probability of exploitation in next 30 days
EPSS Percentile
84.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0268 is in the 72nd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (8)

composerpatch availablevia ghsa
Product: symfony/intlFixed in: 2.7.38
composerpatch availablevia ghsa
Product: symfony/intlFixed in: 2.8.31
composerpatch availablevia ghsa
Product: symfony/intlFixed in: 3.2.14
composerpatch availablevia ghsa
Product: symfony/intlFixed in: 3.3.13
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

Vendor Advisories (1)

composerGHSA-c49r-8gj6-768rhigh

Symfony Directory Traversal

May 14, 2022

References

github.com / symfony/symfony/pull/24994
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2019/03/msg00009.html
Third Party Advisory
symfony.com / blog/cve-2017-16654-intl-bundle-readers-breaking-out-of-paths
Issue TrackingVendor Advisory
debian.org / security/2018/dsa-4262
Third Party Advisory