PatchTheCVECVE-2021-27931: LumisXP (aka Lumis Experience Platform) before 10.0.0 allows unauthenticated blind XXE via an API request to P
CVE-2021-27931 is a critical-severity flaw (CVSS 9.1) affecting lumis experience platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
LumisXP (aka Lumis Experience Platform) before 10.0.0 allows unauthenticated blind XXE via an API request to PageControllerXml.jsp. One can send a request crafted with an XXE payload and achieve outcomes such as reading local server files or denial of service.
Why this priority
- Critical severity
- EPSS top 3%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 18.1% (top 3%) |
| CISA exploited list | No |
| Weakness | CWE-611 |
| Published | 2021-03-03 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Nuclei scan template: LumisXP <10.0.0 - Blind XML External Entity Attack
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-27931?
lumis experience platform: upgrade to 10.0.0. Exact commands for each OS are on this page.
Is CVE-2021-27931 being exploited?
CVE-2021-27931 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-27931 affect?
CVE-2021-27931 affects lumis experience platform. Severity is critical (CVSS 9.1). LumisXP (aka Lumis Experience Platform) before 10.0.0 allows unauthenticated blind XXE via an API request to PageControllerXml.jsp. One can send a request crafted with an XXE payload and achieve outcomes such as reading local server files o
How urgent is CVE-2021-27931?
Priority 66/100. Critical severity; EPSS top 3%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action