CVE-2023-26491 — RSSHub is an open source and extensible RSS feed generator

RSSHub is an open source and extensible RSS feed generator. 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 delibe

01What is this vulnerability?

RSSHub is an open source and extensible RSS feed generator. 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. This vulnerability was fixed in version c910c4d28717fb860fbe064736641f379fab2c91…

02Affected products

Vendor	Product	Versions
DIYgod	RSSHub	< 1.0.0-master.c910c4d

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-03-03T22:41:37.230Z
• Last modified: 2025-02-25T15:02:18.810Z

09References

• github.com — https://github.com/DIYgod/RSSHub/security/advisories/GHSA-32gr-4cq6-5w5q
• github.com — https://github.com/DIYgod/RSSHub/commit/c910c4d28717fb860fbe064736641f379fab2c91