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CVE-2021-27918

HIGHCVSS 7.5/10EPSS 2.54%

Last modified

CVE-2021-27918 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.. EPSS estimates a 2.54% chance of exploitation in the next 30 days.

Description

encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
2.54%

83.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GolangGo< 1.15.9
GolangGo>= 1.16.0, < 1.16.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-27918?
encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.
How severe is CVE-2021-27918?
CVE-2021-27918 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.54% probability of exploitation in the next 30 days.
How do I fix CVE-2021-27918?
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-2021-27918?

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

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Source: NVD / NIST