CVE-2026-66300CWE-79cross-site-scripting

CVE-2026-66300

Medium · published August 4, 2026

CVSS v3.1
5.0
EPSS
0%
Percentile
23.8
In the wild
Unconfirmed
What it is

SNOMED International Snowstorm contains a reflected XSS vulnerability within the "Web Route" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3.

The record
Technical detail
CVSS v3.1
5.0 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00320 · 23.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-04T23:16Z
References (4)
https://github.com/IHTSDO/snowstorm/commit/575b555695811110dafe2fcea7dd2fd7e4bcee39 · 9119a7d8-5eab-497f-8521-727c672e3725https://github.com/IHTSDO/snowstorm/commit/b8061add427c930b3030549e77aa23ec5957ceb6 · 9119a7d8-5eab-497f-8521-727c672e3725https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-212-01.json · 9119a7d8-5eab-497f-8521-727c672e3725https://www.cve.org/CVERecord?id=CVE-2026-66300 · 9119a7d8-5eab-497f-8521-727c672e3725
EPSS history
Timeline
  • 04 AUG 18:51Z
    SNOMED International Snowstorm reflected XSS
    cvelistv5