How severe is CVE-2020-15156?

CVE-2020-15156 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-15156 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15156?

CVE-2020-15156 affects Nodebb Blog Comments. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15156?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-15156 published?

CVE-2020-15156 was published on 2020-08-26 and last updated on 2026-06-17.

CVE-2020-15156

CVE-2020-15156 is a medium-severity vulnerability in Nodebb Blog Comments with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 4.3
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Nodebb Blog Comments
Published: 2020-08-26
Last modified: 2026-06-17

Description

In nodebb-plugin-blog-comments before version 0.7.0, a logged in user is vulnerable to an XSS attack which could allow a third party to post on their behalf on the forum. This is due to lack of CSRF validation.

Frequently asked questions

What is CVE-2020-15156?: In nodebb-plugin-blog-comments before version 0.7.0, a logged in user is vulnerable to an XSS attack which could allow a third party to post on their behalf on the forum. This is due to lack of CSRF validation.
How severe is CVE-2020-15156?: CVE-2020-15156 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-15156 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15156?: CVE-2020-15156 affects Nodebb Blog Comments. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15156?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-15156 published?: CVE-2020-15156 was published on 2020-08-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nodebb:blog_comments:*:*:*:*:*:node.js:*:*

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