CVE-2023-6146 — A Qualys web application was found to have a stored XSS vulnerability resulting

A Qualys web application was found to have a stored XSS vulnerability resulting from the absence of HTML encoding in the presentation of logging information to users. This vulnerability allowed a user with login access to the application to introduce XSS payload via browser detai

01What is this vulnerability?

A Qualys web application was found to have a stored XSS vulnerability resulting from the absence of HTML encoding in the presentation of logging information to users. This vulnerability allowed a user with login access to the application to introduce XSS payload via browser details.

02Affected products

Vendor	Product	Versions
—	Qualys / Qualysguard —	—

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: 2023-12-08T14:21:56.577Z
• Last modified: 2024-10-09T13:48:40.807Z

09References

• www.qualys.com — https://www.qualys.com/security-advisories/