5.4

CVE-2021-27907: apache software foundation apache superset Cross-site Scripting

CVSS: 5.4v3.1MediumModified
AliasesGHSA-w358-rj93-r5qvBIT-superset-2021-27907PYSEC-2021-127
Published 05-03-2021Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2021-27907 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in apache software foundation apache superset. EPSS estimates a 86.39% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities.

Overall risk
39/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
86.39%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-03-2021
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

Apache Superset up to and including 0.38.0 allowed the creation of a Markdown component on a Dashboard page for describing chart's related information. Abusing this functionality, a malicious user could inject javascript code executing unwanted action in the context of the user's browser. The javascript code will be automatically executed (Stored XSS) when a legitimate user surfs on the dashboard page. The vulnerability is exploitable creating a “div” section and embedding in it a “svg” element with javascript code.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

86.39%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

0.00 pp

From 86.39% on 18-09-2026

18-09-202618-10-2026
EPSS score
86.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
Apache software foundation1 product
PyPI1 product
  • apache-superset< 0.38.1

3 vendors · 3 products

References

6 links