CVE-2026-97036
Arbitrary code execution during build on darwin via "-l to_library" in cgo in cmd/go
Description
On Darwin, building a malicious package that uses cgo could cause arbitrary code execution when using the Apple linker due to passing "-l to_library <path>" in a "#cgo LDFLAGS" directive. The Apple linker recombines the separated arguments "-l" and "to_library" into "-lto_library", which loads an arbitrary LTO plugin dynamic library at link time. The go command now disallows "-l" followed by "to_library" in "#cgo LDFLAGS", rejects "-lazy_library", "-lazy_framework", "-load_hidden", "-library", and "-library-path", and checks recombined "-l" arguments against disallowed linker flags and patterns.
INFO
Published Date :
Nov. 11, 2026, 5:19 a.m.
Last Modified :
Nov. 11, 2026, 5:19 a.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Update the Go toolchain to the latest version.
- Review CGO directives for malicious linker flags.
- Build packages using trusted sources only.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-97036.
| URL | Resource |
|---|---|
| https://go.dev/cl/862149 | |
| https://go.dev/issue/82574 | |
| https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM | |
| https://pkg.go.dev/vuln/GO-2026-6855 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-97036 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-97036
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-97036 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-97036 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Nov. 11, 2026
Action Type Old Value New Value Added Description On Darwin, building a malicious package that uses cgo could cause arbitrary code execution when using the Apple linker due to passing "-l to_library <path>" in a "#cgo LDFLAGS" directive. The Apple linker recombines the separated arguments "-l" and "to_library" into "-lto_library", which loads an arbitrary LTO plugin dynamic library at link time. The go command now disallows "-l" followed by "to_library" in "#cgo LDFLAGS", rejects "-lazy_library", "-lazy_framework", "-load_hidden", "-library", and "-library-path", and checks recombined "-l" arguments against disallowed linker flags and patterns. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/97xxx/CVE-2026-97036.json">CVE-2026-97036</a> Added Reference https://go.dev/cl/862149 Added Reference https://go.dev/issue/82574 Added Reference https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM Added Reference https://pkg.go.dev/vuln/GO-2026-6855