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CVE-2020-21526

CRITICALCVSS 9.8/10EPSS 1.89%

Last modified

CVE-2020-21526 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.. EPSS estimates a 1.89% chance of exploitation in the next 30 days.

Description

An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
1.89%

76.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
HaloHalo1.1.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-21526?
An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.
How severe is CVE-2020-21526?
CVE-2020-21526 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.89% probability of exploitation in the next 30 days.
How do I fix CVE-2020-21526?
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-2020-21526?

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Source: NVD / NIST