EUVD-2026-74283Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/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
Network-reachable, no auth, low complexity; only route metadata disclosed (C:L), no integrity or availability impact from the side channel.
Primary rating from Vendor (github).
CVSS VectorVendor: github
Lifecycle Timeline
2DescriptionCVE.org
Maravel, a PHP framework oriented towards dependency injection, prior to version 10.73.1 has a side-channel information disclosure issue. When a route was compiled with dynamic placeholders (e.g., /api/v1/users/{id}), the raw string placeholder key was mistakenly registered into the flat static route checklist. An attacker scanning endpoints could intentionally pass the literal template syntax (e.g., GET /api/v1/users/{id}) to force an unexpected match against the static map. Because the dynamic tree engine was bypassed, no arguments were captured. This forced modern PHP 8+ versions to throw a native ArgumentCountError, resulting in a 500 Internal Server Error instead of a uniform 404 Not Found. By tracking which fuzz patterns exploded into a 500 error, a malicious actor could programmatically profile and map out internal route parameter names and controller schemas. Version 10.73.1 contains a patch. As a workaround, mitigate this side-channel leak by implementing a defensive check in a global middleware. This will reject any literal brace patterns before they reach the router engine.
AnalysisAI
Side-channel route enumeration in Maravel PHP framework (versions prior to 10.73.1) allows unauthenticated remote attackers to map internal API route structures and controller parameter schemas by exploiting a differential HTTP response. The router's static route checklist incorrectly stores raw dynamic placeholder strings (e.g., {id}), so passing literal brace syntax in a request URL bypasses the dynamic tree engine, triggers a PHP 8+ ArgumentCountError, and returns a 500 Internal Server Error rather than the expected 404. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target application to be running any release of maravel-framework prior to 10.73.1 on PHP 8.0 or later (PHP 8+ is required to raise `ArgumentCountError` instead of silently failing). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L) is consistent with the vulnerability's characteristics: fully remote, no authentication, low complexity, and limited to confidentiality of route metadata. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to maravel-framework 10.73.1, which contains the vendor-released patch correcting the static route map compilation logic so that raw placeholder strings are no longer registered as exact-match entries. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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