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CVE-2020-27388

22
FAUCET Score

CVE-2020-27388 describes multiple Stored Cross-Site Scripting (XSS) vulnerabilities affecting the YOURLS Admin Panel, versions 1.5 through 1.7.10. An authenticated user can trigger these vulnerabilities by modifying and uploading a malicious PHP plugin. The vulnerability has a CVSS score of 5.4 (Medium), indicating a low attack complexity and requiring user interaction, with potential for low impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.5, <= 1.7.10CPE matchmatch criteria
cpe:2.3:a:yourls:yourls:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
50.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0072 is in the 84th percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 (1)

composerpatch availablevia ghsa
Product: yourls/yourlsFixed in: 1.8

Vendor Advisories (1)

composerGHSA-pwgg-r6fq-mf94medium

YOURLS Stored Cross Site Scripting (XSS)

May 24, 2022

References

github.com / YOURLS/YOURLS/pull/2761
Third Party Advisory
johnjhacking.com / blog/cve-2020-27388
Third Party Advisory