The Quarterly Threat Landscape Report is out. See what attackers are targeting now.Read report
When "Trailer" headers are sent by a client, the HTTP server internally uses the header values to populate the Request.Trailer map passed to the server handler. Because Request.Trailer is a map, each entry incurs memory overhead. For HTTP/2 servers, a malicious client can exploit this by sending a "Trailer" header that declares a large number of fields, causing the server to allocate a disproportionate amount of memory while bypassing Server.MaxHeaderValueCount and Server.MaxHeaderBytes limits. This exploit is not applicable for HTTP/1 servers, which do not support multiplexing a large number of requests over one TCP connection, and whose Server.MaxHeaderBytes are calculated differently.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade golang-raceUpgrade golang-docsUpgrade golang-binUpgrade golang-miscUpgrade golangUpgrade golang-testsUpgrade delveUpgrade go-toolsetUpgrade golang-src | Oct 25, 2026 | Oct 20, 2026 |
| Alpine Linux | — | Upgrade goUpgrade docker | Oct 15, 2026 | Oct 8, 2026 |
| Amazon_linux_2023 | — | Upgrade amazon-cloudwatch-agentUpgrade dockerUpgrade captreeUpgrade containerd-stress-debuginfoUpgrade oci-add-hooksUpgrade skopeoUpgrade cni-plugins-debuginfoUpgrade soci-snapshotterUpgrade oci-add-hooks-debugsourceUpgrade containerd-debugsourceUpgrade skopeo-debugsourceUpgrade cni-pluginsUpgrade oci-add-hooks-debuginfoUpgrade yq-debuginfoUpgrade captree-debuginfoUpgrade buildah-debuginfoUpgrade containerd-stressUpgrade buildahUpgrade libcap-debuginfoUpgrade docker-debuginfoUpgrade git-lfs-debugsourceUpgrade credentials-fetcherUpgrade golangUpgrade docker-debugsourceUpgrade yq-debugsourceUpgrade runfinch-finchUpgrade nerdctlUpgrade cni-plugins-debugsourceUpgrade golang-miscUpgrade libcap-staticUpgrade libcap-debugsourceUpgrade libcap-develUpgrade ecs-initUpgrade git-lfsUpgrade skopeo-debuginfoUpgrade containerd-debuginfoUpgrade golang-testsUpgrade golang-srcUpgrade golang-sharedUpgrade git-lfs-debuginfoUpgrade containerdUpgrade skopeo-testsUpgrade golang-docsUpgrade yqUpgrade libcapUpgrade buildah-debugsourceUpgrade amazon-ecr-credential-helperUpgrade golang-bin | Oct 28, 2026 | Oct 8, 2026 |
| Redhat_linux | — | Upgrade golang-docsUpgrade go-toolsetUpgrade delveUpgrade delve-debuginfoUpgrade golang-srcNo solution existsUpgrade golangUpgrade golang-miscUpgrade delve-debugsourceUpgrade golang-binUpgrade golang-testsUpgrade golang-race | Oct 26, 2026 | Oct 8, 2026 |
| Rocky_linux | — | Upgrade delve-debugsourceUpgrade golangUpgrade go-toolsetUpgrade delve-debuginfoUpgrade golang-raceUpgrade golang-binUpgrade delve | Oct 26, 2026 | Oct 21, 2026 |
| Ubuntu | — | Upgrade golang-1.22Upgrade golang-1.22-srcUpgrade golang-1.22-go | Oct 19, 2026 | Oct 8, 2026 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub