Update go toolchain directive to v1.26.4 [SECURITY] (main)#342
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Update go toolchain directive to v1.26.4 [SECURITY] (main)#342renovate-rancher[bot] wants to merge 1 commit into
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This PR contains the following updates:
1.26.3→1.26.4Warning
Some dependencies could not be looked up. Check the warning logs for more information.
Inefficient candidate hostname parsing in crypto/x509
BIT-golang-2026-27145 / CVE-2026-27145 / GO-2026-5037
More information
Details
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname.
With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.
Severity
Unknown
References
This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).
Quadratic complexity in WordDecoder.DecodeHeader in mime
BIT-golang-2026-42504 / CVE-2026-42504 / GO-2026-5038
More information
Details
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
Severity
Unknown
References
This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).
Arbitrary inputs are included in errors without any escaping in net/textproto
BIT-golang-2026-42507 / CVE-2026-42507 / GO-2026-5039
More information
Details
When returning errors, functions in the net/textproto package would include its input as part of the error. This might allow an attacker to inject misleading content to errors that are printed or logged.
Severity
Unknown
References
This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).
Configuration
📅 Schedule: (UTC)
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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
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This PR has been generated by Mend Renovate.