CVE-2026-55701OpenTelemetry githubreceiver silently ignores configured required_headers authentication
Updated under an hour ago ()
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It affects open-telemetry opentelemetry-collector-contrib and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/githubreceiver/trace_receiver.go handleReq() does not check those headers on incoming webhook requests. An unauthenticated sender can therefore bypass an operator's required_headers authentication control and submit arbitrary webhook payloads. When the Secret field is empty, github.ValidatePayload also skips HMAC validation, leaving the webhook endpoint without either configured authentication mechanism. Successful exploitation can inject fabricated CI/CD trace data into the observability pipeline. This issue is fixed in version 0.151.0.
- CVSS
- 6.9 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
open-telemetry opentelemetry-collector-contrib open_telemetry:opentelemetry_collector_contrib (from the name) | before 0.151.0 | CNA record |
open-telemetry github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver open_telemetry:github.com_open_telemetry_opentelemetry_collector_contrib_receiver_githubreceiver (from the name) | before 0.151.0 | CNA record |
References
- https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxcx-refsource-confirm
- https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854x-refsource-misc
- https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98x-refsource-misc
- https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.