CVE-2023-26491

RSSHub is vulnerable to cross-site scripting (XSS) via unvalidated URL parameters

MEDIUM
6.1
CVSS Score
Published: March 3, 2023 at 10:41 PM UTC
Updated: June 17, 2026 at 05:43 AM UTC
2 products affected across 2 vendorsRsshubRSSHub

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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. Please upgrade to this or a later version, there are no known workarounds.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2023-03-02
Affected range stops below 2023-03-02, so it looks safe — our inference, not a vendor statement
v < 1.0.0-master.c910c4d
Affected range stops below 1.0.0-master.c910c4d, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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