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Fencer Vulns
high 7.1

CVE-2018-11598 json

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Information Disclosure with user cra…

published 2018-05-31 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-3623

cvss
7.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Information Disclosure with user crafted input files via a Buffer Overflow or Out-of-bounds Read during syntax parsing of certain for loops in jsparse.c.

Patch / fix

  • espruino espruino 1.99

Exploit prediction

1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/espruino/Espruino/files/2025968/test_2.txt referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/espruino/Espruino/files/2025956/test_0.txt referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/espruino/Espruino/files/2025963/test_1.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.