5.3

CVE-2021-29621: apache airflow Observable Discrepancy

CVSS: 5.3v3.1MediumModified
AliasesGHSA-434h-p4gx-jm89BIT-airflow-2021-29621PYSEC-2021-90
Published 07-06-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-29621 is a medium (CVSS 5.3) Observable Discrepancy vulnerability in apache airflow. EPSS estimates a 3.40% chance of exploitation in the next 30 days, higher than 88.6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
3.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder <= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

3.40%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

0.00 pp

From 3.40% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.40%

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
Dpgaspar1 product
PyPI1 product
  • flask-appbuilder< 780bd0e8fbf2d36ada52edb769477e0a4edae580 | < 3.3.0

3 vendors · 3 products

References

13 links
Show all 13 references