01 Record
CVE-2023-37544
Apache Pulsar WebSocket Proxy: Improper Authentication for WebSocket Proxy Endpoint Allows DoS
HighPUBLISHEDCNA: apache
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
02 Description
Apache Pulsar WebSocket Proxy: Improper Authentication for WebSocket Proxy Endpoint Allows DoS
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
- 1.35% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 71.1% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- 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
- 2023-12-20 08:34Z2 YR AGO
- Last updated
- 2025-02-13 17:01Z1 YR AGO
- Reserved
- 2023-07-07
- Assigning CNA
- apache
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-287Improper AuthenticationClass
- Data version
- 5.1
- Document digest
- 3b199ce743ac2d43bab4337f462d3696ee89fecb31d1b3aa25d855777e700ecd
05 Affected products
VendorProductVersionsPlatforms
Apache Software FoundationApache Pulsar WebSocket Proxy2.8.0 to 2.8.*, 2.9.0 to 2.9.*, 2.10.0 to 2.10.4, 2.11.0 to 2.11.1, 3.0.0—
06 References
- lists.apache.orghttps://lists.apache.org/thread/od0k9zts1toc9h9snbqq4pjpyx28mv4m
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/12/20/2