Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-48489— Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes

Quick assessment

Affected
symfony symfony
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Symfony是Symfony组织开源的一个用于 Web 和控制台应用程序的 PHP 框架以及一组可重用的 PHP 组件。 Symfony 5.4.53之前版本、6.4.41之前版本、7.4.13之前版本和8.0.13之前版本存在授权问题漏洞，该漏洞源于DefaultAuthenticationFailureHandler在处理failure_forward为true时过于信任请求提供的_failure_path参数，允许未经身份验证的失败登录请求将子请求分发到受访问控制保护的GET路由，从而绕过防火墙监

AI Predicted 7.5 Difficulty: Easy EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 8

VendorProduct Version RangeStatus
symfony security-http < 5.4.53 affected
>= 6.0.0-BETA1, < 6.4.41 affected
>= 7.0.0-BETA1, < 7.4.13 affected
>= 8.0.0-BETA1, < 8.0.13 affected
symfony symfony < 5.4.53 affected
>= 6.0.0-BETA1, < 6.4.41 affected
>= 7.0.0-BETA1, < 7.4.13 affected
>= 8.0.0-BETA1, < 8.0.13 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-48489

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes
Source: CVE Program / CVE List V5
Vulnerability 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, DefaultAuthenticationFailureHandler honored the request-supplied _failure_path parameter when failure_forward: true was enabled, allowing an unauthenticated failing login request to dispatch a subrequest to access_control-protected GET routes that skipped firewall listeners. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Symfony 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Symfony是Symfony组织开源的一个用于 Web 和控制台应用程序的 PHP 框架以及一组可重用的 PHP 组件。 Symfony 5.4.53之前版本、6.4.41之前版本、7.4.13之前版本和8.0.13之前版本存在授权问题漏洞，该漏洞源于DefaultAuthenticationFailureHandler在处理failure_forward为true时过于信任请求提供的_failure_path参数，允许未经身份验证的失败登录请求将子请求分发到受访问控制保护的GET路由，从而绕过防火墙监
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
symfony symfony < 5.4.53 -
symfony security-http < 5.4.53 -

II. Public POCs for CVE-2026-48489

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-48489

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-48489 (2)

Vendor Advisories for CVE-2026-48489 (1)

Vendor Pages for CVE-2026-48489 (2)

Same Patch Batch · symfony · 2026-07-14 · 30 CVEs total

CVE-2026-45133 Symfony: [Yaml] Harden the parser when handling untrusted input
CVE-2026-46644 symfony/polyfill-intl-idn accepts xn-- labels whose Punycode payload decodes to ASCII-only
CVE-2026-48761 Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes on <object>, <applet>,
CVE-2026-48736 Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-c
CVE-2026-48747 Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signatu
CVE-2026-48760 Symfony: HtmlSanitizer URL Parser Deny Gates Underinclusive: Percent-Encoded BiDi Marks an
CVE-2026-48784 Symfony: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Gener
CVE-2026-47212 Symfony: Twilio Notifier Webhook Parser Never Verifies the X-Twilio-Signature HMAC: Unauth
CVE-2026-45068 Symfony: Argument Injection in SendmailTransport via Dash-Prefixed Recipient Address
CVE-2026-45071 Symfony: XXE (Local File Disclosure) in DomCrawler::addXmlContent() via validateOnParse =
CVE-2026-47767 Symfony: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/AP
CVE-2026-45075 Symfony: HEAD Request Bypasses methods: ['GET'] Filter in #[IsGranted] / #[IsSignatureVali
CVE-2026-45304 Symfony: YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansio
CVE-2026-45063 Symfony: Identity Spoofing via Unanchored DN Regex in X509Authenticator
CVE-2026-45070 Symfony: Email Header Injection via Non-Token Characters in Mime Parameter Names
CVE-2026-45756 Symfony: JsonPath Evaluates Attacker-Controlled Regular Expressions in match()/search() Wi
CVE-2026-45754 Symfony: Mailjet Mailer Webhook Parser Never Verifies the Configured Secret — Unauthentica
CVE-2026-45069 Symfony: OidcTokenHandler Accepts JWTs Missing aud/iss/exp Claims
CVE-2026-45753 Symfony: HtmlSanitizer UrlAttributeSanitizer Omits action/formaction/poster/cite — javascr
CVE-2026-45072 Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File R

Showing top 20 of 30 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: symfony
Same vendor: symfony
Same weakness: CWE-863

V. Comments for CVE-2026-48489

No comments yet

Leave a comment