CVE-2023-38504
Sails DoS vulnerability for apps with sockets enabled
Sails is a realtime MVC Framework for Node.js. In Sails apps prior to version 1.5.7,, an attacker can send a virtual request that will cause the node process to crash. This behavior was fixed in Sails v1.5.7. As a workaround, disable the sockets hook and remove the sails.io.js client.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Sails DoS vulnerability for apps with sockets enabled
Sails is a realtime MVC Framework for Node.js. In Sails apps prior to version 1.5.7,, an attacker can send a virtual request that will cause the node process to crash. This behavior was fixed in Sails v1.5.7. As a workaround, disable the sockets hook and remove the sails.io.js client.
- Record
CVE-2023-38504- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248
- Updated
- 2026-11-02
EUVDEUVD-2023-2068
Sails is a realtime MVC Framework for Node.js. In Sails apps prior to version 1.5.7,, an attacker can send a virtual request that will cause the node process to crash. This behavior was fixed in Sails v1.5.7. As a workaround, disable the sockets hook and remove the sails.io.js client.
- Record
EUVD-2023-2068- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gpw9-fwm8-7rx7
DoS vulnerability for apps with sockets enabled
Impact
In Sails apps <=v1.5.6, an attacker can send a virtual request that will cause the node process to crash.
Patches
This behavior was fixed in Sails v1.5.7
Workarounds
Disable the sockets hook and remove the sails.io.js client
References
https://github.com/balderdashy/sails/pull/7287
Big thanks to @ThomasRinsma at Codean!
- Record
GHSA-gpw9-fwm8-7rx7- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248
- Updated
- 2026-11-02
NVD
Sails is a realtime MVC Framework for Node.js. In Sails apps prior to version 1.5.7,, an attacker can send a virtual request that will cause the node process to crash. This behavior was fixed in Sails v1.5.7. As a workaround, disable the sockets hook and remove the sails.io.js client.
- Record
CVE-2023-38504- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248
- Updated
- 2026-11-02
OSV
Sails DoS vulnerability for apps with sockets enabled
Sails is a realtime MVC Framework for Node.js. In Sails apps prior to version 1.5.7,, an attacker can send a virtual request that will cause the node process to crash. This behavior was fixed in Sails v1.5.7. As a workaround, disable the sockets hook and remove the sails.io.js client.
- Record
CVE-2023-38504- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248
- Updated
- 2026-11-02
OSVGHSA-gpw9-fwm8-7rx7
DoS vulnerability for apps with sockets enabled
Impact
In Sails apps <=v1.5.6, an attacker can send a virtual request that will cause the node process to crash.
Patches
This behavior was fixed in Sails v1.5.7
Workarounds
Disable the sockets hook and remove the sails.io.js client
References
https://github.com/balderdashy/sails/pull/7287
Big thanks to @ThomasRinsma at Codean!
- Record
GHSA-gpw9-fwm8-7rx7- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
sailsnpm |
before 1.5.7 | 1.5.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-38504 is a high vulnerability (CVSS 7.5) in Balderdashy Sails, published July 27, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.94%, the 61st percentile. Fixed in sails 1.5.7.
References
github.com/balderdashy/sails/security/advisories/GHSA-gpw9-fwm8-7rx7
nvd.nist.gov/vuln/detail/CVE-2023-38504