CVE-2020-14040
HIGH7.5EPSS 0.01%golang.org/x/text Infinite loop
Published: 5/18/2021Modified: 2/4/2026
Description
Go version v0.3.3 of the x/text package fixes a vulnerability in encoding/unicode that could lead to the UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an infinite loop if the String function on the Decoder is called, or the Decoder is passed to golang.org/x/text/transform.String. ### Specific Go Packages Affected golang.org/x/text/encoding/unicode golang.org/x/text/transform
Affected packages (3)
- Debian/golang-golang-x-textfrom 0, < 0.3.3-1
- Go/golang.org/x/textfrom 0, < 0.3.3
- Go/golang.org/x/textfrom 0, < 0.3.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C |
References (11)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-14040
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-14040
- WEBhttps://github.com/golang/go/issues/39491
- WEBhttps://github.com/golang/text/commit/23ae387dee1f90d29a23c0e87ee0b46038fbed0e
- WEBhttps://go.dev/cl/238238
- WEBhttps://go.dev/issue/39491
- WEBhttps://go.googlesource.com/text/+/23ae387dee1f90d29a23c0e87ee0b46038fbed0e
- WEBhttps://go-review.googlesource.com/c/text/+/238238
- WEBhttps://groups.google.com/forum/#!topic/golang-announce/bXVeAmGOqz0
- WEBhttps://groups.google.com/g/golang-announce/c/bXVeAmGOqz0
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/TACQFZDPA7AUR6TRZBCX2RGRFSDYLI7O