Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-26291

22
FAUCET Score

CVE-2020-26291 is a medium-severity vulnerability affecting URI.js, a JavaScript URL mutation library, specifically versions prior to 1.19.4. This flaw allows attackers to spoof the hostname by injecting a backslash followed by an at symbol, potentially leading to allow/block list bypasses, SSRF, or open redirects if the hostname is used for security decisions. The vulnerability has a CVSS score of 6.5, indicating a network-based attack with low complexity and high impact on integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.19.4CPE matchmatch criteria
cpe:2.3:a:uri.js_project:uri.js:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 88th percentile among its peer group of 21,958 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: urijsFixed in: 1.19.4
redhatpatch availablevia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8:v3.6.0-62
View patch

Vendor Advisories (2)

redhatCVE-2020-26291Moderate

urijs: Hostname spoofing via backslashes in URL

Dec 31, 2020
npmGHSA-3329-pjwv-fjpgmedium

Hostname spoofing via backslashes in URL

Dec 30, 2020

References

github.com / medialize/URI.js/commit/b02bf037c99ac9316b77ff8bfd840e90becf1155
PatchThird Party Advisory
github.com / medialize/URI.js/releases/tag/v1.19.4
Release NotesThird Party Advisory
github.com / medialize/URI.js/security/advisories/GHSA-3329-pjwv-fjpg
Third Party Advisory
npmjs.com / package/urijs
Third Party Advisory