CVE-2023-24540

Name: CVE-2023-24540
Creator: NVD / NIST
Published: 2023-05-11T16:15:09.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.55%

Last modified Jun 17, 2026

CVE-2023-24540 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Not all valid JavaScript whitespace characters are considered to be whitespace. Templates containing whitespace characters outside of the character set "\t\n\f\r\u0020\u2028\u2029" in JavaScript contexts that also contain actions may not be properly sanitized during execution.. EPSS estimates a 1.55% chance of exploitation in the next 30 days.

Description

Not all valid JavaScript whitespace characters are considered to be whitespace. Templates containing whitespace characters outside of the character set "\t\n\f\r\u0020\u2028\u2029" in JavaScript contexts that also contain actions may not be properly sanitized during execution.

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

1.55%

71.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Golang	Go	< 1.19.9
Golang	Go	>= 1.20.0, < 1.20.4

References

https://go.dev/cl/491616Patch
https://go.dev/issue/59721Issue Tracking, Patch
https://groups.google.com/g/golang-announce/c/MEb0UyuSMsUMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2023-1752Vendor Advisory
https://go.dev/cl/491616Patch
https://go.dev/issue/59721Issue Tracking, Patch
https://groups.google.com/g/golang-announce/c/MEb0UyuSMsUMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2023-1752Vendor Advisory
https://security.netapp.com/advisory/ntap-20241115-0008/

Timeline

Published: May 11, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-24540?

How severe is CVE-2023-24540?

CVE-2023-24540 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.55% probability of exploitation in the next 30 days.

How do I fix CVE-2023-24540?

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-2023-24540?

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

Scan your code now

Source: NVD / NIST