CVE-2026-93751

uri-js through 4.4.1 Improper UTF-8 Decoding via pctDecChars

6.9 Medium

uri-js through 4.4.1 contains an improper UTF-8 decoding vulnerability in pctDecChars() that decodes invalid and overlong percent-encoded sequences into ASCII metacharacters. Attackers can craft percent-encoded payloads to bypass platform decoder validation and inject path traversal or CRLF sequences that downstream consumers process without filtering.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.40%Up 0.2 points since Sep 19, 2026

What each source reports

CVE List Score used 6.9

uri-js through 4.4.1 Improper UTF-8 Decoding via pctDecChars

Record: CVE-2026-93751
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-176
Updated: 2026-11-02

EUVDEUVD-2026-83256 6.9

Record: EUVD-2026-83256
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-7g43-p94j-qr58 6.9

uri-js through 4.4.1 contains an improper UTF-8 decoding vulnerability in pctDecChars() that...

Record: GHSA-7g43-p94j-qr58
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-176
Updated: 2026-11-02

NVD 6.9

Record: CVE-2026-93751
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-176
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-93751 6.9

Record: DEBIAN-CVE-2026-93751
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-93751 6.9

Record: UBUNTU-CVE-2026-93751
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Updated: 2026-11-02

OSVAZL-103436 No score

CVE-2026-93751 affecting package js-jquery 3.5.0-4

Record: AZL-103436
Updated: 2026-11-02

Affected products

garycourt uri-js

Affected packages

Affected packages
Package	Affected	Fixed
`js-jquery` Azure Linux:3	through 3.5.0-4	None known
`node-uri-js` Debian:12	All versions, plus listed versions 4.4.0+dfsg-104.4.0+dfsg-84.4.0+dfsg-9	None known
`node-uri-js` Debian:13	All versions, plus listed versions 4.4.0+dfsg-104.4.0+dfsg-84.4.0+dfsg-9	None known
`node-uri-js` Debian:14	All versions, plus listed versions 4.4.0+dfsg-104.4.0+dfsg-84.4.0+dfsg-9	None known
`node-uri-js` Ubuntu:20.04:LTS	All versions, plus listed versions 4.2.2+dfsg-44.2.2+dfsg-5	None known
`node-uri-js` Ubuntu:22.04:LTS	All versions, plus listed versions 4.4.0+dfsg-54.4.0+dfsg-7	None known
`node-uri-js` Ubuntu:24.04:LTS	All versions, plus listed versions 4.4.0+dfsg-8	None known
`node-uri-js` Ubuntu:26.10	All versions, plus listed versions 4.4.0+dfsg-94.4.0+dfsg-10	None known
`node-uri-js` Ubuntu:26.04:LTS	All versions, plus listed versions 4.4.0+dfsg-84.4.0+dfsg-9	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-93751 is a medium vulnerability (CVSS 6.9) in Garycourt Uri-js, published September 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. No source names a fixed version.