Buffer Overflow vulnerability in zserge jsmn jsmn HEAD 25647e6 allows a remote attacker to cause a denial of service via the jsmn.h, jsmn_p…

published 2026-10-13 27 d ago modified 2026-10-30 9 d ago also EUVD-2026-98807

cvss: 3.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits: 0; none known

Buffer Overflow vulnerability in zserge jsmn jsmn HEAD 25647e6 allows a remote attacker to cause a denial of service via the jsmn.h, jsmn_parse(), example/jsondump.c, dump() components

Patch / fix

links 2

github.com/zserge/jsmn#250 pull request
github.com/zserge/jsmn#250 pull request

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-95117 updated 2026-10-31 cvss 7.5

jsmn: jsmn: buffer overflow in jsmn_parse leads to denial of service

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 20 d ago (2026-10-19)

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

CVE List CVE-2026-95117
NVD CVE-2026-95117

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.

Summary