uri-js through 4.4.1 Improper UTF-8 Decoding via pctDecChars
Priority LOW 37CWE-176Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.004 34th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Hardened Images
Timeline
- 2026-10-02 Threatist record created from CVE-2026-93751
- 2026-10-03 Alias added: GHSA-7g43-p94j-qr58
References
More garycourt vulnerabilities
- TI-2026-63101 uri-js through 4.4.1 Denial of Service via removeDotSegments CVSS 4.0HIGH 8.7
- TI-2026-65678 garycourt uri-js Mailto Header mailto.ts URI.parse uncaught exception CVSS 4.0MEDIUM 5.3
- TI-2017-11746 Uncontrolled resource consumption in HackerOne uri-js node module CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-93751 · CVE Program
- CVE-2026-93751 · NVD
- FIRST EPSS
- GHSA-7g43-p94j-qr58 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-93751 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences