CVE-2024-50347
Laravel Reverb has Missing API Signature Verification
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Laravel Reverb has Missing API Signature Verification
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.
- Record
CVE-2024-50347- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/U:Green - Weakness
- CWE-347
- Updated
- 2026-11-02
EUVDEUVD-2024-3098
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.
- Record
EUVD-2024-3098- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/U:Green - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pfrr-xvrf-pxjx
Laravel Reverb Missing API Signature Verification
Impact
A community member disclosed 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.
The verification signature is a hash comprised of different parts of the request signed by the app's secret key. The signature is sent as part of the request and should be regenerated by Reverb. Only when both the signature in the request and the one generated by Reverb match should the request be allowed. This helps to verify the request came from a known source.
[!NOTE]
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.
The following endpoints were affected:
POST /events
POST /events_batch
GET /connections
GET /channels
GET /channel
GET /channel_users
POST /users_terminate
Patches
The issue was resolved by #252 and the patch released in v1.4.0.
References
- Record
GHSA-pfrr-xvrf-pxjx- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-345, CWE-347
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2024-50347- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/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:Green - Weakness
- CWE-347
- Updated
- 2026-11-02
OSV
Laravel Reverb has Missing API Signature Verification
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.
- Record
CVE-2024-50347- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/U:Green - Weakness
- CWE-347
- Updated
- 2026-11-02
OSVGHSA-pfrr-xvrf-pxjx
Laravel Reverb Missing API Signature Verification
Impact
A community member disclosed 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.
The verification signature is a hash comprised of different parts of the request signed by the app's secret key. The signature is sent as part of the request and should be regenerated by Reverb. Only when both the signature in the request and the one generated by Reverb match should the request be allowed. This helps to verify the request came from a known source.
[!NOTE]
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.
The following endpoints were affected:
POST /events
POST /events_batch
GET /connections
GET /channels
GET /channel
GET /channel_users
POST /users_terminate
Patches
The issue was resolved by #252 and the patch released in v1.4.0.
References
- Record
GHSA-pfrr-xvrf-pxjx- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-345, CWE-347
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
laravel/reverbPackagist |
before 1.4.0 | 1.4.0 |
laravel/reverbPackagist |
before 1.4.0, plus listed versions v1.0.0v1.0.0-beta1v1.0.0-beta10v1.0.0-beta11v1.0.0-beta12 Show 14 moreShow lessv1.0.0-beta13v1.0.0-beta14v1.0.0-beta2v1.0.0-beta3v1.0.0-beta4v1.0.0-beta5v1.0.0-beta6v1.0.0-beta7v1.0.0-beta8v1.0.0-beta9v1.1.0v1.2.0v1.3.0v1.3.1 |
1.4.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-50347 is a medium vulnerability (CVSS 6.3) in Laravel Reverb, published October 31, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 28th percentile. Fixed in laravel/reverb 1.4.0.
References
github.com/laravel/reverb/security/advisories/GHSA-pfrr-xvrf-pxjx
nvd.nist.gov/vuln/detail/CVE-2024-50347