Bug 2515084

Summary: CVE-2026-41178 cri-o1.35: OpenTelemetry-Go: Denial of Service via oversized baggage headers [fedora-all]
Product: [Fedora] Fedora Reporter: Praise Ogwuche <pogwuche>
Component: cri-o1.35Assignee: Brad Smith <bradley.g.smith>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: bradley.g.smith, go-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["8af1214d-5e3b-4d7d-9f73-4565cc41f9fd"]}
Fixed In Version: Doc Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2484830    

Description Praise Ogwuche 2026-08-13 04:13:10 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Versions 1.41.0 and 1.43.0 removed raw-length rejection and it causes `Parse` to process arbitrarily large/invalid baggage headers and log errors, enabling DoS via oversized inputs. Versions 1.42.0 and 1.44.0 fix the issue.
Comment 1 Brad Smith 2026-08-24 17:31:36 UTC 
Confirmed v1.35.7

    {
      "vulnerability": {
        "@id": "https://pkg.go.dev/vuln/GO-2026-5158",
        "name": "GO-2026-5158",
        "description": "Opentelemetry-go's baggage parsing no longer caps raw header length in go.opente
lemetry.io/otel",
        "aliases": [
          "CVE-2026-41178",
          "GHSA-5wrp-cwcj-q835"
        ]
      },
      "products": [
        {
          "@id": "Unknown Product",
          "subcomponents": [
            {
              "@id": "pkg:golang/go.opentelemetry.io%2Fotel.0"
            }
          ]
        }
      ],
      "status": "affected"
    },