CVE-2020-21527

Name: CVE-2020-21527
Creator: NVD / NIST
Published: 2020-09-30T18:15:24.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2020-21527 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. There is an Arbitrary file deletion vulnerability in halo v1.1.3. A backup function in the background allows a user, when deleting their backup files, to delete any files on the system through directory traversal.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

There is an Arbitrary file deletion vulnerability in halo v1.1.3. A backup function in the background allows a user, when deleting their backup files, to delete any files on the system through directory traversal.

Metrics

CVSS 3.1

7.7/10

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

EPSS Probability

1.12%

62.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Halo	Halo	1.1.3

References

https://github.com/halo-dev/halo/issues/422Issue Tracking, Third Party Advisory
https://github.com/halo-dev/halo/issues/422Issue Tracking, Third Party Advisory

Timeline

Published: Sep 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-21527?

How severe is CVE-2020-21527?

CVE-2020-21527 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-21527?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-21527?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST