CVE-2018-20900 — cPanel before 71

cPanel before 71.9980.37 allows stored XSS in the YUM autorepair functionality (SEC-399).

01What is this vulnerability?

cPanel before 71.9980.37 allows stored XSS in the YUM autorepair functionality (SEC-399).

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-08-01T13:57:19.000Z
• Last modified: 2024-08-05T12:12:28.921Z

09References

• documentation.cpanel.net — https://documentation.cpanel.net/display/CL/72+Change+Log