CVE-2022-2421
CVE-2022-2421 is a critical-severity vulnerability in Socket Socket.io-parser with a CVSS 3.x base score of 10.0. 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-89.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- EPSS exploit prediction: 1% (62nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-89
- Affected product: Socket Socket.io-parser
- Published:
- Last modified:
Description
Due to improper type validation in attachment parsing the Socket.io js library, it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.
Frequently asked questions
- What is CVE-2022-2421?
- Due to improper type validation in attachment parsing the Socket.io js library, it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.
- How severe is CVE-2022-2421?
- CVE-2022-2421 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-2421 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-2421?
- CVE-2022-2421 affects Socket Socket.io-parser. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-2421?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2022-2421 published?
- CVE-2022-2421 was published on 2022-10-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:socket:socket.io-parser:*:*:*:*:*:node.js:*:*
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