CVE-2021-3646

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

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Published Sep 10, 2021 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Description

btcpayserver 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

btcpayserver

btcpayserver/btcpayserver

affected

Version	Status	Constraints
`unspecified`	affected	< 1.2.3

Configuration 1 [-]

cpe:2.3:a:btcpayserver:btcpay_server:*:*:*:*:*:*:*:*

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-2021-26943	btcpayserver is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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 Adjacent Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

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% (0.770% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/btcpayserver/btcpayserver/commit/fc4e47cec608cc3dba24b19d0145ac69320b975e
https://huntr.dev/bounties/32e30ecf-31fa-45f6-8552-47250ef0e613

History

No history.

Subscriptions

Btcpayserver Btcpay Server

Weaknesses

CWE-79

Sources

CVE record Updated: Aug 3, 2024, 5:01 PM

Status: PUBLISHED
Assigner: @huntrdev
Published: Sep 10, 2021, 6:02 PM
Updated: Aug 3, 2024, 5:01 PM
Reserved: Jul 14, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

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

Status: Modified
Published: Sep 10, 2021, 6:15 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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