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CVE-2021-27907

64
FAUCET Score

CVE-2021-27907 is a stored cross-site scripting (XSS) vulnerability affecting Apache Superset versions up to and including 0.38.0. This flaw allows an authenticated attacker to inject malicious JavaScript into a dashboard's Markdown component, which then executes in a legitimate user's browser when they view the dashboard. Rated Medium (CVSS 5.4), it requires low privileges and user interaction, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.38.0CPE matchmatch criteria
cpe:2.3:a:apache:superset:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
85.97%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.8597 is in the 100th percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: apache-supersetFixed in: 0.38.1

Vendor Advisories (1)

pipGHSA-w358-rj93-r5qvmedium

Apache Superset Stored XSS on Dashboard markdown

May 24, 2022

References

lists.apache.org / thread.html/r09293fb09f1d617f0d2180c42210e739e2211f8da9bc5c1873bea67a%40%3Cdev.superset.apache.org%3E
Mailing ListVendor Advisory