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01 Record

CVE-2026-105926

Apache Pulsar: Missing Topic Authorization on Binary Protocol GetSchema and GetOrCreateSchema Commands

MediumPUBLISHEDCNA: apache
CNA base score5.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:L

02 Description

Apache Pulsar: Missing Topic Authorization on Binary Protocol GetSchema and GetOrCreateSchema Commands

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.40% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 34.7% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-22.
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
2026-10-21 17:59Z7 DAYS AGO
Last updated
2026-10-21 17:59Z7 DAYS AGO
Reserved
2026-10-06
Assigning CNA
apache
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:L
Weaknesses
Data version
5.2
Document digest
ea77feaad43849a53592a7462d60ff5e92a36c7dc718ee9be978242ba79c2462

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache Pulsar2.2.0 to < 4.0.14, 4.1.0 to 4.1.3, 4.2.0 to < 4.2.5—

06 References