What is CVE-2018-12104?

CVE-2018-12104 is a medium-severity vulnerability in Airbnb Knowledge Repo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-17.

How severe is CVE-2018-12104?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Airbnb Knowledge Repo

CVE-2018-12104

Cross-site scripting (XSS) vulnerability in Airbnb Knowledge Repo 0.7.4 allows remote attackers to inject arbitrary web scripts or HTML via the post comments functionality, as demonstrated by the post/posts/new_report.kp URI.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-06-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.013 (70.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Airbnb Knowledge Repo — versions 0.7.4

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/airbnb/knowledge-repo/issues/431 (Exploit, Third Party Advisory, Mitigation)
www.securityfocus.com/bid/104487 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-12104?: CVE-2018-12104 is a medium-severity vulnerability in Airbnb Knowledge Repo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-17.
How severe is CVE-2018-12104?: Medium severity. CVSS v3 base score is 6.1 out of 10.