CVE-2026-29181
Last modified
CVE-2026-29181 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
Description
OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opentelemetry | Opentelemetry | >= 1.36.0, < 1.41.0 |
References
- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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