CVE-2026-103387CWE-248

CVE-2026-103387

Medium · published October 1, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
23.7
In the wild
Unconfirmed
What it is

A weakness has been identified in garycourt uri-js up to 4.4.1. This affects the function URI.parse of the file src/schemes/mailto.ts of the component Mailto Header Handler. This manipulation of the argument to causes uncaught exception. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00319 · 23.7th percentile
Weakness
CWE-248 · Uncaught Exception
Published
2026-10-01T00:17Z
References (6)
https://github.com/garycourt/uri-js/ · [email protected]https://github.com/garycourt/uri-js/issues/103 · [email protected]https://vuldb.com/cve/CVE-2026-103387 · [email protected]https://vuldb.com/submit/956810 · [email protected]https://vuldb.com/vuln/412124 · [email protected]https://vuldb.com/vuln/412124/cti · [email protected]
EPSS history
Timeline
  • 02 OCT 03:41Z
    EPSS moved — → 1%
    epss
  • 30 SEP 19:45Z
    garycourt uri-js Mailto Header mailto.ts URI.parse uncaught exception
    cvelistv5