A vulnerability was found in the ping functionality of the ws module before 1.0.0 which allowed clients to allocate memory by sending a ping frame. The ping functionality by default responds with a pong frame and the previously given payload of the ping frame. This is exactly what you expect, but internally ws always transforms all data that we need to send to a Buffer instance and that is where the vulnerability existed. ws didn't do any checks for the type of data it was sending. With buffers in node when you allocate it when a number instead of a string it will allocate the amount of bytes.
CVE-2016-10518
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 2.0%, top 21% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 39(Track)EG Risk 39/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation2% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 2%
- EPSS %ILE
- 79%
- KEV
- Not listed
Published
May 31, 2018
Last Modified
November 21, 2024
References (6)
- support@hackeronehttps://gist.github.com/c0nrad/e92005446c480707a74a
- support@hackeronehttps://github.com/websockets/ws/releases/tag/1.0.1
- support@hackeronehttps://nodesecurity.io/advisories/67
- af854a3a-2127-422b-91ae-364da2661108https://gist.github.com/c0nrad/e92005446c480707a74a
- af854a3a-2127-422b-91ae-364da2661108https://github.com/websockets/ws/releases/tag/1.0.1
- af854a3a-2127-422b-91ae-364da2661108https://nodesecurity.io/advisories/67
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| ws | — | 1.0.1 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 42× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-26 14:50 UTCEPSS rescore
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- 2026-07-22 14:04 UTCEPSS rescore
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- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 07:39 UTCEG score recompute
- 2026-05-27 13:38 UTCEPSS rescore
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- 2026-05-26 07:16 UTCEPSS rescore
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- 2026-05-24 09:21 UTCOSV refresh
Related CVEs(same CWE)
Same CWE
10 shownCWE-119
- CVE-2003-0819EG 10.0EPSS p99HIGH
- CVE-2003-0903EG 10.0EPSS p98HIGH
- CVE-2003-1339EG 10.0EPSS p99HIGH
- CVE-2003-0095EG 10.0EPSS p96HIGH
- CVE-2002-2227EG 10.0HIGH
- CVE-2002-2248EG 10.0EPSS p92HIGH
- CVE-2002-2250EG 10.0EPSS p94HIGH
- CVE-2002-2251EG 10.0EPSS p93HIGH
- CVE-2002-2253EG 10.0EPSS p93HIGH
- CVE-2002-2257EG 10.0EPSS p92HIGH
Frequently asked(5)
What is CVE-2016-10518?
When was CVE-2016-10518 disclosed?
Is CVE-2016-10518 actively exploited?
What is the CVSS score of CVE-2016-10518?
How do I remediate CVE-2016-10518?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-10518
Is Your Infrastructure Affected by CVE-2016-10518?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.