CVE-2023-24540
NVD-CWE-noinfoPublished: May 11, 2023· Updated: Jun 17, 2026
Official 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.
Risk Analysis
Golang contains a critical vulnerability where improper whitespace handling in JavaScript contexts can lead to failed sanitization. This could allow for injection attacks in applications using Go's template engine.
No public exploit is known, and it is not in the CISA KEV.
Update the Go environment to the latest patched version to ensure proper template sanitization.
Technical Analysis
CVE-2023-24540 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (9)
Quick Facts
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-24540 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts