rsshub vulnerable to Cross-site Scripting via unvalidated URL parameters (CVE-2023-26491) | HOL Guard CVE

Medium · CVSS 6.1CVE-2023-26491GHSA-32GR-4CQ6-5W5Q

rsshub vulnerable to Cross-site Scripting via unvalidated URL parameters

Answer in brief

CVE-2023-26491 records a Medium severity (CVSS 6.1) vulnerability in rsshub vulnerable to Cross-site Scripting via unvalidated URL parameters. The current sources do not mark it as known exploited. The current feed maps rsshub (npm). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 1, 2023Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.1. 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.

Affected scope and exposure questions

The current feed maps rsshub (npm). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
rsshubnpm	>=0 <1.0.0-master.c910c4d	1.0.0-master.c910c4d

Recommended response

Check inventory. Check lockfiles and deployed manifests for rsshub.
Review the reported fix. Update rsshub to 1.0.0-master.c910c4d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Mar 1, 2023
Evidence: source:osv:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

### Impact When the URL parameters contain certain special characters, it returns an error page that does not properly handle XSS vulnerabilities, allowing for the execution of arbitrary JavaScript code. Users who access the deliberately constructed URL are affected. ### Patches This vulnerability was fixed in version c910c4d28717fb860fbe064736641f379fab2c91. Please upgrade to this or a later version. ### Workarounds No.

Quoted source text, attributed separately from HOL analysis.