CVE-2020-28851
CVSS v3
7.5
HIGH
EPSS Score
2.3 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In x/text in Go 1.15.4, an "index out of range" panic occurs in language.ParseAcceptLanguage while parsing the -u- extension. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)
Technical details
- Published
- 2021-01-02
Frequently asked questions
What is CVE-2020-28851?
In x/text in Go 1.15.4, an "index out of range" panic occurs in language.ParseAcceptLanguage while parsing the -u- extension. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)
Is CVE-2020-28851 actively exploited?
Active exploitation of CVE-2020-28851 has not been confirmed. Its EPSS score was 2.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-28851?
CVE-2020-28851 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2020-28851 affecting your environment?
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