UBUNTU-CVE-2026-48784
A vulnerability in the Symfony PHP framework's UrlGenerator::doGenerate() method prior to versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13 allows attacker-controlled route parameters to generate URLs that collapse to a different path due to improper dot-segment encoding. This issue is fixed in the stated versions.
AI Analysis
Technical Summary
Symfony versions before 5.4.53, 6.4.41, 7.4.13, and 8.0.13 contain a vulnerability in the UrlGenerator::doGenerate() function where the use of strtr() for dot-segment encoding skips every other chained '../' or './' segment. This flaw allows crafted route parameters to produce URLs that, after RFC 3986 normalization, resolve to different paths than intended. The vulnerability is addressed by fixes in the specified versions.
Potential Impact
An attacker can manipulate route parameters to generate URLs that resolve to unintended paths, potentially leading to security issues related to URL path resolution. The CVSS vector indicates network attack vector, low complexity, no privileges required, user interaction required, and low scope and impact on confidentiality, integrity, and availability.
Mitigation Recommendations
This vulnerability is fixed in Symfony versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13. Users should upgrade to these or later versions to remediate the issue. No other mitigation steps are indicated.
UBUNTU-CVE-2026-48784
Description
A vulnerability in the Symfony PHP framework's UrlGenerator::doGenerate() method prior to versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13 allows attacker-controlled route parameters to generate URLs that collapse to a different path due to improper dot-segment encoding. This issue is fixed in the stated versions.
CVSS v4.0
Affected software
pkg:deb/ubuntu/[email protected]?arch=source&distro=xenialpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0.1+esm2?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu1+esm2?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu8+esm1?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/[email protected]+dfsg-3ubuntu3+esm1?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]+dfsg-1?arch=source&distro=questingpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu1?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Symfony versions before 5.4.53, 6.4.41, 7.4.13, and 8.0.13 contain a vulnerability in the UrlGenerator::doGenerate() function where the use of strtr() for dot-segment encoding skips every other chained '../' or './' segment. This flaw allows crafted route parameters to produce URLs that, after RFC 3986 normalization, resolve to different paths than intended. The vulnerability is addressed by fixes in the specified versions.
Potential Impact
An attacker can manipulate route parameters to generate URLs that resolve to unintended paths, potentially leading to security issues related to URL path resolution. The CVSS vector indicates network attack vector, low complexity, no privileges required, user interaction required, and low scope and impact on confidentiality, integrity, and availability.
Mitigation Recommendations
This vulnerability is fixed in Symfony versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13. Users should upgrade to these or later versions to remediate the issue. No other mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-48784
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a58b49568715ace43da7e29
Added to database: 07/16/2026, 10:38:13 UTC
Last enriched: 07/16/2026, 12:26:48 UTC
Last updated: 07/16/2026, 12:26:48 UTC
Views: 2
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