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CVE-2023-26491

20
FAUCET Score

CVE-2023-26491 is a Cross-Site Scripting (XSS) vulnerability in RSSHub, an open-source RSS feed generator, affecting versions prior to c910c4d28717fb860fbe064736641f379fab2c91. This flaw allows for arbitrary JavaScript execution when specially crafted URL parameters are processed, leading to a medium severity rating (CVSS 6.1). Exploitation requires user interaction (UI:R) by accessing a malicious URL. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2023-03-02CPE matchmatch criteria
cpe:2.3:a:rsshub:rsshub:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 37th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: rsshubFixed in: 1.0.0-master.c910c4d

Vendor Advisories (1)

npmGHSA-32gr-4cq6-5w5qmedium

rsshub vulnerable to Cross-site Scripting via unvalidated URL parameters

Mar 1, 2023

References

github.com / DIYgod/RSSHub/commit/c910c4d28717fb860fbe064736641f379fab2c91
Patch
github.com / DIYgod/RSSHub/security/advisories/GHSA-32gr-4cq6-5w5q
PatchVendor Advisory