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01 Record

CVE-2026-87998

Open WebUI: Non-admin users can delete admin-owned external knowledge connections via knowledge base deletion

HighPUBLISHEDCNA: GitHub_M
CNA base score7.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
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02 Description

Open WebUI: Non-admin users can delete admin-owned external knowledge connections via knowledge base deletion

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.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.48% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 41.5% of scored records. A rank, not a probability.
NVD base score
7.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
NVD analysis status
Analyzed. NVD last modified this record on 2026-09-16.
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
2026-09-09 21:31Z1 MO AGO
Last updated
2026-09-10 17:48Z1 MO AGO
Reserved
2026-09-09
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 7.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Weaknesses
  • CWE-269Improper Privilege ManagementClass
  • CWE-863Incorrect AuthorizationClass
Data version
5.2
Document digest
eba7a49c161720a2de983ec48626c67825e2b6b2a856837fe122e850c17c2c32

05 Affected products

VendorProductVersionsPlatforms
open-webuiopen-webui>= 0.10.0, < 0.11.1—

06 References