OpenTelemetry .NET has Denial of Service (DoS) Vulnerability in API Package
Impact
What kind of vulnerability is it? Who is impacted?
A vulnerability in OpenTelemetry.Api package 1.10.0 to 1.11.1 could cause a Denial of Service (DoS) when a tracestate and traceparent header is received.
- Even if an application does not explicitly use trace context propagation, receiving these headers can still trigger high CPU usage.
- This issue impacts any application accessible over the web or backend services that process HTTP requests containing a
tracestateheader. - Application may experience excessive resource consumption, leading to increased latency, degraded performance, or downtime.
Patches
Has the problem been patched? What versions should users upgrade to?
This issue has been <strong data-start="1143" data-end="1184">resolved in OpenTelemetry.Api 1.11.2</strong> by <strong data-start="1188" data-end="1212">reverting the change</strong> that introduced the problematic behavior in versions <strong data-start="1266" data-end="1286">1.10.0 to 1.11.1</strong>.</li><li data-start="1290" data-end="1409">The fix ensures that <strong data-start="1313" data-end="1380">valid tracing headers no longer cause excessive CPU consumption</strong> when received in requests.</li></ul><h4 data-start="1411" data-end="1434"><strong data-start="1416" data-end="1434">Fixed Version:</strong></h4>
| OpenTelemetry .NET Version | Status |
|---|---|
| <= 1.9.x | ✅ Not affected |
| 1.10.0 - 1.11.1 | ❌ Vulnerable |
| 1.11.2 (Fixed) | ✅ Safe to use |
Upgrade Command:
dotnet add package OpenTelemetry --version 1.11.2Delisting of Affected Packages To prevent accidental usage, we have delisted the affected versions (1.10.0 to 1.11.1) from NuGet. Users should avoid these versions and upgrade to 1.11.2 immediately.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
References
Are there any links users can visit to find out more?
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| .NET (NuGet) | OpenTelemetry.Api | >= 1.11.0, < 1.11.2, = 1.10.0, = 1.10.0-beta.1, = 1.10.0-rc.1, = 1.11.0-rc.1 | 1.11.2 |
Verweise
- https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-8785-wc3w-h8q6
- https://nvd.nist.gov/vuln/detail/CVE-2025-27513
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/6161
- https://github.com/open-telemetry/opentelemetry-dotnet/commit/1b555c1201413f2f55f2cd3c4ba03ef4b615b6b5
- https://github.com/open-telemetry/opentelemetry-dotnet
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H- Schwäche (CWE)
CWE-770- Plattform
- .NET (NuGet)
- Paket
OpenTelemetry.Api- Veröffentlicht
- 05.03.2025
- Aktualisiert
- 11.10.2026 11:23
Quellen und Lizenzen
OSV / GitHub Advisory Database - GHSA-8785-wc3w-h8q6 - CC BY 4.0
Schwachstellenhistorie: OpenTelemetry.Api
Alle veröffentlichten Schwachstellen dieses Pakets (.NET (NuGet)), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 2
- Erste → letzte
- 03.2025 04.2026
- Ohne Fix
- 0
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Mittel 2
Veröffentlichungen pro Jahr
- 2025: 1
- 2026: 1
-
OpenTelemetry .NET has Denial of Service (DoS) Vulnerability in API Package dieser Eintrag
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