RSSHub vulnerable to Server-Side Request Forgery (CVE-2024-27927)

RSSHub vulnerable to Server-Side Request Forgery (CVE-2024-27927) | HOL Guard CVE

Why this deserves its current priority

CVSS is 6.5. 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.

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.a429472	1.0.0-master.a429472

Recommended response

Check inventory. Check lockfiles and deployed manifests for rsshub.
Review the reported fix. Update rsshub to 1.0.0-master.a429472 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Mar 6, 2024
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
Aug 7, 2026

Sources and claim methodology

Upstream source description

### Summary Serveral Server-Side Request Forgery (SSRF) vulnerabilities in RSSHub allow remote attackers to use the server as a proxy to send HTTP GET requests to arbitrary targets and retrieve information in the internal network or conduct Denial-of-Service (DoS) attacks. ### Details #### `/mastodon/acct/:acct/statuses/:only_media?` https://github.com/DIYgod/RSSHub/blob/5928c5db2472e101c2f5c3bafed77a2f72edd40a/lib/routes/mastodon/acct.js#L4-L7 https://github.com/DIYgod/RSSHub/blob/5928c5db2472e101c2f5c3bafed77a2f72edd40a/lib/routes/mastodon/utils.js#L85-L105 #### `/zjol/paper/:id?` https://github.com/DIYgod/RSSHub/blob/172f6cfd2b69ea6affdbdedf61e6dde1671f3796/lib/routes/zjol/paper.js#L7-L13 #### `/m4/:id?/:category*` https://github.com/DIYgod/RSSHub/blob/172f6cfd2b69ea6affdbdedf61e6dde1671f3796/lib/routes/m4/index.js#L10-L14 ### PoC - https://rsshub.app/mastodon/acct/[email protected]%23/statuses - https://rsshub.app/zjol/paper/a6wt15r2.requestrepo.com%23 - https://rsshub.app/m4/a6wt15r2.requestrepo.com%23/test ### Impact The attacker can send malicious requests to a RSSHub server, to make the server send HTTP GET requests to arbitrary destinations and see partial responses. This may lead to: 1. Leak the server IP address, which could be hidden behind a CDN. 2. Retrieve information in the internal network. e.g. which addresses/ports are accessible, the titles and meta descriptions of HTML pages. 3. DoS amplification. The attacker could request the server to download some large files, or chain several SSRF requests in a single attacker request: `https://rsshub.a.com/zjol/paper/rsshub.b.net%2Fzjol%2Fpaper%2Frsshub.a.com%252Fzjol%252Fpaper%252Frsshub.b.net%25252Fzjol%25252Fpaper%25252Frsshub.a.com%2525252Fzjol%2525252Fpaper%2525252Fexample.com%2525252523%25252523%252523%2523%23`.

Quoted source text, attributed separately from HOL analysis.