CVE-2026-48784
Last modified
CVE-2026-48784 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sensiolabs | Symfony | < 5.4.53 |
| Sensiolabs | Symfony | >= 6.0.0, < 6.4.41 |
| Sensiolabs | Symfony | >= 7.0.0, < 7.4.13 |
| Sensiolabs | Symfony | >= 8.0.0, < 8.0.13 |
References
- https://github.com/symfony/symfony/releases/tag/v5.4.53Product, Release Notes
- https://github.com/symfony/symfony/releases/tag/v6.4.41Product, Release Notes
- https://github.com/symfony/symfony/releases/tag/v7.4.13Product, Release Notes
- https://github.com/symfony/symfony/security/advisories/GHSA-h5x3-xfc9-m39hPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-48784?
How severe is CVE-2026-48784?
How do I fix CVE-2026-48784?
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-48779ws is an open source WebSocket client and server for Node.js…7.5
- CVE-2026-4878A flaw was found in libcap. A local unprivileged user can ex…7
- CVE-2026-48780Forem is open source software for building communities. Prio…8.2
- CVE-2026-48781Postiz is an AI social media scheduling tool. In versions pr…9.9
- CVE-2026-48782Pydantic AI is a Python agent framework for building applica…6.8
- CVE-2026-48783Postiz is an AI social media scheduling tool. Versions prior…4.8
- CVE-2026-48787gin-vue-admin is an AI-assisted basic development platform. …7.4
- CVE-2026-48788Remark42 is a self-hosted comment engine for blogs, articles…8.2
- CVE-2026-48789AnythingLLM is an application that turns pieces of content i…4.3
- CVE-2026-48790Turso CLI is the command line interface (CLI) to the open-so…5.5
- CVE-2026-48792pam_usb provides hardware authentication for Linux using ord…4.4
- CVE-2026-48793Jellyfin is an open source self hosted media server. Prior t…8.8
Are you affected by CVE-2026-48784?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST