fix(security/unknown): update go toolchain directive to v1.26.4 [security]#325
Merged
korniltsev-grafanista merged 1 commit intoJun 3, 2026
Merged
Conversation
…rity] | datasource | package | from | to | | -------------- | ------- | ------ | ------ | | golang-version | go | 1.26.3 | 1.26.4 | Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>
renovate-sh-app
Bot
added
automerge-security-update
severity:UNKNOWN
update-patch
labels
korniltsev-grafanista
approved these changes
Jun 3, 2026
korniltsev-grafanista
deleted the
renovate/golang-version-go-vulnerability
branch
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This PR contains the following updates:
1.26.3→1.26.4Inefficient candidate hostname parsing in crypto/x509
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
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
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)
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
Need help?
You can ask for more help in the following Slack channel: #proj-renovate-self-hosted. In that channel you can also find ADR and FAQ docs in the Resources section.