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XSS due to lack of CSRF validation for replying/publishing

Moderate severity GitHub Reviewed Published Aug 25, 2020 in psychobunny/nodebb-plugin-blog-comments • Updated Jan 9, 2023

Package

npm nodebb-plugin-blog-comments (npm)

Affected versions

< 0.7.0

Patched versions

0.7.0

Description

Impact

Due to lack of CSRF validation, a logged in user is potentially vulnerable to an XSS attack which could allow a third party to post on their behalf on the forum.

Patches

Upgrade to the latest version v0.7.0

Workarounds

You can cherry-pick the following commit: psychobunny/nodebb-plugin-blog-comments@cf43bee

References

Visit https://community.nodebb.org if you have any questions about this issue or on how to patch / upgrade your instance.

References

@psychobunny psychobunny published to psychobunny/nodebb-plugin-blog-comments Aug 25, 2020
Reviewed Aug 26, 2020
Published to the GitHub Advisory Database Aug 26, 2020
Last updated Jan 9, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS score

0.082%
(36th percentile)

Weaknesses

CVE ID

CVE-2020-15156

GHSA ID

GHSA-43m5-c88r-cjvv

Source code

No known source code

Credits

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