CVE-2022-33009 — A stored cross-site scripting (XSS) vulnerability in LightCMS v1

A stored cross-site scripting (XSS) vulnerability in LightCMS v1.3.11 allows attackers to execute arbitrary web scripts or HTML via uploading a crafted PDF file.

01What is this vulnerability?

A stored cross-site scripting (XSS) vulnerability in LightCMS v1.3.11 allows attackers to execute arbitrary web scripts or HTML via uploading a crafted PDF file.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

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: 2022-06-27T23:15:08.313
• Last modified: 2026-07-09T01:17:32.163

09References

• github.com — https://github.com/eddy8/LightCMS
• github.com — https://github.com/eddy8/LightCMS/issues/30
• github.com — https://github.com/eddy8/LightCMS
• github.com — https://github.com/eddy8/LightCMS/issues/30