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CVE-2024-50347

Laravel Reverb has Missing API Signature Verification

MEDIUM
6.3
CVSS Score
Published: October 31, 2024 at 05:56 PM UTC
Updated: June 17, 2026 at 08:04 AM UTC
1 product affected across 1 vendorReverb

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Laravel Reverb provides a real-time WebSocket communication backend for Laravel applications. Prior to 1.4.0, there is an issue where verification signatures for requests sent to Reverb's Pusher-compatible API were not being verified. This API is used in scenarios such as broadcasting a message from a backend service or for obtaining statistical information (such as number of connections) about a given channel. This issue only affects the Pusher-compatible API endpoints and not the WebSocket connections themselves. In order to exploit this vulnerability, the application ID which, should never be exposed, would need to be known by an attacker. This vulnerability is fixed in 1.4.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Reverb· Laravel
60%
v < 1.4.0
Affected range stops below 1.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

x_refsource_MISC
Source: [email protected]
https://github.com/laravel/reverb/commit/73cc140d76e803b151fc2dd2e4eb3eb784a82ee2
x_refsource_MISC
Source: [email protected]
https://github.com/laravel/reverb/pull/252
x_refsource_MISC
Source: [email protected]
https://github.com/laravel/reverb/releases/tag/v1.4.0
x_refsource_CONFIRM
Source: [email protected]
https://github.com/laravel/reverb/security/advisories/GHSA-pfrr-xvrf-pxjx

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-347

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