THREATPORT/VULNERABILITY/CVE-2021-27578
MEDIUM SEVERITY

CVE-2021-27578

Zeppelin vulnerability

CVSS
6.1
EPSS
3.2%
EPSS pct
87th
Exploited
No known
Cross Site Scripting vulnerability in markdown interpreter of Apache Zeppelin allows an attacker to inject malicious scripts. This issue affects Apache Zeppelin Apache Zeppelin versions prior to 0.9.0.
Affected vendor
Apache
Affected product
Zeppelin
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness type (CWE)
  • CWE-79 — Cross-Site Scripting (XSS)
Published
2021-09-02

Risk analysis

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

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2021-27578

  • Confirm whether Apache Zeppelin is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-27578.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-27578

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-27578 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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