CVE-2018-21036
CVE-2018-21036 is a high-severity vulnerability in Sailsjs Sails with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Sailsjs Sails
- Published:
- Last modified:
Description
Sails.js before v1.0.0-46 allows attackers to cause a denial of service with a single request because there is no error handler in sails-hook-sockets to handle an empty pathname in a WebSocket request.
Frequently asked questions
- What is CVE-2018-21036?
- Sails.js before v1.0.0-46 allows attackers to cause a denial of service with a single request because there is no error handler in sails-hook-sockets to handle an empty pathname in a WebSocket request.
- How severe is CVE-2018-21036?
- CVE-2018-21036 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2018-21036 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-21036?
- CVE-2018-21036 affects Sailsjs Sails. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-21036?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-21036 published?
- CVE-2018-21036 was published on 2020-07-21 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2020/07/19/1
- https://github.com/balderdashy/sails-hook-sockets/commit/0533a4864b1920fd8fbb5287bc0889193c5faf44
- https://github.com/balderdashy/sails-hook-sockets/commit/ff02114eaec090ee51db48435cc32d451662606e
- https://github.com/balderdashy/sails/blob/56f8276f6501a144a03d1f0f28df4ccdb4ad82e2/CHANGELOG.md
Affected products (1)
- cpe:2.3:a:sailsjs:sails:*:*:*:*:*:node.js:*:*
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