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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-48784

28
FAUCET Score

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate() used strtr() dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters to generate URLs that collapse to a different path under RFC 3986 normalization. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.

First published: Jul 14, 2026Last modified: Jul 14, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 5.4.53CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 6.0.0, < 6.4.41CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.4.13CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 8.0.0, < 8.0.13CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.1MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 19th 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

Vendor Patches (8)

composerpatch availablevia ghsa
Product: symfony/routingFixed in: 5.4.53
composerpatch availablevia ghsa
Product: symfony/routingFixed in: 6.4.41
composerpatch availablevia ghsa
Product: symfony/routingFixed in: 7.4.13
composerpatch availablevia ghsa
Product: symfony/routingFixed in: 8.0.13
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 5.4.53
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 6.4.41
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 7.4.13
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 8.0.13

Vendor Advisories (1)

composerGHSA-h5x3-xfc9-m39hmedium

Symfony: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Generated URL Collapses Off-Route Under RFC 3986 Normalization

Jun 15, 2026

References

github.com / symfony/symfony/commit/4b63c3a3f7af04ecd79c89a594b0b02a01990b1d
Patch
github.com / symfony/symfony/releases/tag/v5.4.53
ProductRelease Notes
github.com / symfony/symfony/releases/tag/v6.4.41
ProductRelease Notes
github.com / symfony/symfony/releases/tag/v7.4.13
ProductRelease Notes
github.com / symfony/symfony/security/advisories/GHSA-h5x3-xfc9-m39h
PatchVendor Advisory