PatchTheCVECVE-2026-41078: OpenTelemetry dotnet is a dotnet telemetry framework
CVE-2026-41078 is a medium-severity flaw (CVSS 5.9) affecting opentelemetry. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
OpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that enlarged size is reused for subsequent allocations. Under high-cardinality or attacker-influenced telemetry input, this can increase memory consumption and potentially cause denial of service. There is no plan to
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.9 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 87%) |
| CISA exploited list | No |
| Weakness | CWE-770 |
| Published | 2026-04-23 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-41078?
opentelemetry: upgrade to 1.6.0. Exact commands for each OS are on this page.
Is CVE-2026-41078 being exploited?
CVE-2026-41078 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-41078 affect?
CVE-2026-41078 affects opentelemetry. Severity is medium (CVSS 5.9). OpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that en
How urgent is CVE-2026-41078?
Priority 29/100. Remotely exploitable, no login, no user action
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