CVE-2017-18877

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Published Jun 19, 2020 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Description

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS attacks could occur against an OAuth 2.0 allow/deny page.

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

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc1::::::
	cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc2::::::
	cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc3::::::
	cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc4::::::

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2017-9967	An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS attacks could occur against an OAuth 2.0 allow/deny page.
Github GHSA	GHSA-9x8x-w6g5-hx4w	Mattermost Server is vulnerable to XSS attacks against an OAuth 2.0 allow/deny page

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

No CVSS v3.0

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% (0.690% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://mattermost.com/security-updates/

History

No history.

Subscriptions

Mattermost Mattermost Server

Weaknesses

CWE-79

Sources

CVE record Updated: Aug 5, 2024, 9:37 PM

Status: PUBLISHED
Assigner: mitre
Published: Jun 19, 2020, 4:50 PM
Updated: Aug 5, 2024, 9:37 PM
Reserved: Jun 19, 2020, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 1:13 AM

Status: Modified
Published: Jun 19, 2020, 5:15 PM
Modified: Jun 17, 2026, 1:13 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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