THREATPORT/VULNERABILITY/CVE-2021-27931
CRITICAL SEVERITY

CVE-2021-27931

Lumis Experience Platform vulnerability

CVSS
9.1
EPSS
18.1%
EPSS pct
97th
Exploited
No known
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.
Affected vendor
Lumis
Affected product
Lumis Experience Platform
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness type (CWE)
  • CWE-611 — XML External Entity (XXE) Reference
Published
2021-03-03

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to availability.

Its EPSS score of 18.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2021-27931

  • Confirm whether Lumis Lumis Experience Platform is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-27931.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-27931

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-27931 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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