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CVE-2025-61731 is an argument-injection vulnerability in the Go cmd/go toolchain's CgoPkgConfig handling. When building malicious Go source code, the toolchain permits pkg-config arguments that are not explicitly safelisted through the "#cgo pkg-config:" directive. An attacker can supply the "--log-file" option to cause pkg-config to write to an attacker-selected location with partial control over the written content. The flag-sanitization bypass is also associated with potential arbitrary code execution, although the specific code-execution mechanism is not established.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
34 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Go toolchain (cmd/go) code execution risk via CgoPkgConfig flag sanitization bypass, allowing malicious parameters to influence pkg-config invocation and potentially lead to unintended command execution or dangerous compiler/linker option injection in build environments.
An arbitrary code execution risk in Go’s cmd/go where CgoPkgConfig can bypass flag sanitization and invoke pkg-config with unsafe inputs.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.