CVE-2026-103387garycourt uri-js Mailto Header mailto.ts URI.parse uncaught exception
Updated under an hour ago ()
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It affects garycourt uri-js. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
- Weakness (CWE)
- CWE-248
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
garycourt uri-js garycourt:uri-js | 4.4.0; 4.4.1 | CNA record |
References
- https://vuldb.com/vuln/412124vdb-entry, technical-description
- https://vuldb.com/vuln/412124/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-103387third-party-advisory
- https://vuldb.com/submit/956810third-party-advisory
- https://github.com/garycourt/uri-js/issues/103exploit, issue-tracking
- https://github.com/garycourt/uri-js/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.