CVE-2025-64500 | Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Symfony's HttpFoundation component defines an object-oriented layer for the HTTP specification. Starting in version 2.0.0 and prior to version 5.4.50, 6.4.29, and 7.3.7, the `Request` class improperly interprets some `PATH_INFO` in a way that leads to representing some URLs with a path that doesn't start with a `/`. This can allow bypassing some access control rules that are built with this `/`-prefix assumption. Starting in versions 5.4.50, 6.4.29, and 7.3.7, the `Request` class now ensures that URL paths always start with a `/`.

Published: 2025-11-12 Last update: 2026-01-12 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-64500 is rated Moderate Risk (60.7/100): CVSS High severity, with high exploitation likelihood (EPSS 6.31%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-64500

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-27 6.66% 6.31% -0.35%
2 2026-05-22 3.82% 6.66% +2.84%
3 2026-05-20 — 3.82% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-64500

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.3 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 3.4 [email protected]

Weakness enumeration for CVE-2025-64500

GitHub Security Advisory for CVE-2025-64500

GHSA-3rg7-wf37-54rm · Severity: high · Ecosystem: composer — Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass

OS Trackers for CVE-2025-64500

vendor priority summary link
debian not yet assigned CVE-2025-64500 not yet assigned priority: Debian including 1 source packages (symfony), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2025-64500
ubuntu medium CVE-2025-64500 medium priority: Ubuntu including 1 source packages (symfony), 8 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): needs-triage 7, ignored 1. https://ubuntu.com/security/CVE-2025-64500

Affected software / configurations for CVE-2025-64500

Vendor Product Version Raw CPE
sensiolabs httpfoundation >= 2.0.0, < 5.4.50 cpe:2.3:a:sensiolabs:httpfoundation:*:*:*:*:*:*:*:*
sensiolabs httpfoundation >= 6.0.0, < 6.4.29 cpe:2.3:a:sensiolabs:httpfoundation:*:*:*:*:*:*:*:*
sensiolabs httpfoundation >= 7.0.0, < 7.3.7 cpe:2.3:a:sensiolabs:httpfoundation:*:*:*:*:*:*:*:*
sensiolabs symfony >= 2.0.0, < 5.4.50 cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
sensiolabs symfony >= 6.0.0, < 6.4.29 cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
sensiolabs symfony >= 7.0.0, < 7.3.7 cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

References for CVE-2025-64500

cvelogic Threat Intelligence