01 Record
CVE-2026-40991
XML External Entity (XXE) injection when documenting untrusted XML content
MediumPUBLISHEDCNA: vmware
CNA base score5.9 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L
02 Description
XML External Entity (XXE) injection when documenting untrusted XML content
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.22% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 12.7% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-07-23.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-06-09 23:46Z4 MO AGO
- Last updated
- 2026-06-27 21:10Z4 MO AGO
- Reserved
- 2026-04-16
- Assigning CNA
- vmware
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.9)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L
- Weaknesses
- CWE-611Improper Restriction of XML External Entity ReferenceBase
- Data version
- 5.2
- Document digest
- 44b32ae4701e971782b62885da02a3813535775e8fbb6cc88b76a16ca111135c
05 Affected products
VendorProductVersionsPlatforms