Answer in brief
CVE-2026-6322 records a High severity (CVSS 7.5) vulnerability in fast-uri vulnerable to host confusion via percent-encoded authority delimiters. The current sources do not mark it as known exploited. The current feed maps fast-uri/fast-uri (generic), fast-uri (npm), fast-uri (npm), fast-uri (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-6322 records a High severity (CVSS 7.5) vulnerability in fast-uri vulnerable to host confusion via percent-encoded authority delimiters. The current sources do not mark it as known exploited. The current feed maps fast-uri/fast-uri (generic), fast-uri (npm), fast-uri (npm), fast-uri (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps fast-uri/fast-uri (generic), fast-uri (npm), fast-uri (npm), fast-uri (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:openjsf:fast-uri:*:*:*:*:*:node.js:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| fast-uri/fast-urigeneric | >=0 <3.1.2 | 3.1.2 |
| fast-urinpm | >=3.0.0 <3.1.2 | 3.1.2 |
| fast-urinpm | >=0 <2.4.1 | 2.4.1 |
| fast-urinpm | >=3.0.0,<=3.1.1 | 3.1.2 |
| fast-urinpm | <=2.4.0 | 2.4.1 |
Published upstream
May 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 1, 2026
fast-uri normalize() decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator, changing the URI's authority to the second domain. Applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing can be steered to a different authority than the input appeared to specify. Versions <= 3.1.1 are affected. Update to 3.1.2 or later.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps fast-uri/fast-uri (generic), fast-uri (npm), fast-uri (npm), fast-uri (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:openjsf:fast-uri:*:*:*:*:*:node.js:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| fast-uri/fast-urigeneric | >=0 <3.1.2 | 3.1.2 |
| fast-urinpm | >=3.0.0 <3.1.2 | 3.1.2 |
| fast-urinpm | >=0 <2.4.1 | 2.4.1 |
| fast-urinpm | >=3.0.0,<=3.1.1 | 3.1.2 |
| fast-urinpm | <=2.4.0 | 2.4.1 |
Published upstream
May 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 1, 2026
fast-uri normalize() decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator, changing the URI's authority to the second domain. Applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing can be steered to a different authority than the input appeared to specify. Versions <= 3.1.1 are affected. Update to 3.1.2 or later.
Quoted source text, attributed separately from HOL analysis.