CVE-2021-3783

Cross-site Scripting (XSS) - Reflected in yourls/yourls

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Published Sep 15, 2021 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Description

yourls is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

yourls

yourls/yourls

affected

Version	Status	Constraints
`unspecified`	affected	≤ 1.8.2

Configuration 1 [-]

cpe:2.3:a:yourls:yourls:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-2041	yourls is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Github GHSA	GHSA-cpq8-x35g-m439	Cross-site Scripting in yourls

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

Attack Vector Network

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.696% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/yourls/yourls/commit/94f6bab91182142c96ff11f481585b445449efd4
https://huntr.dev/bounties/b688e553-d0d9-4ddf-95a3-ff4b78004984

History

No history.

Subscriptions

Yourls Yourls

Weaknesses

CWE-79

Sources

CVE record Updated: Aug 3, 2024, 5:09 PM

Status: PUBLISHED
Assigner: @huntrdev
Published: Sep 15, 2021, 12:00 PM
Updated: Aug 3, 2024, 5:09 PM
Reserved: Sep 9, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:05 AM

Status: Modified
Published: Sep 15, 2021, 12:15 PM
Modified: Jun 17, 2026, 4:05 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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