ALSA-2026:93617: Important: opentelemetry-collector security update
Collector with the supported components for a Red Hat build of OpenTelemetry
Security Fix(es):
net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667) crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) net/textproto: mime/multipart: golang: golang: Denial of Service via memory limit bypass in multipart form parsing (CVE-2026-94440) net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669) crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
almalinux/opentelemetry-collectorto a version that resolves this vulnerability.Fixed in 0.158.0-2.el9_8
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
Which attack paths are addressed by this update?
The update addresses denial-of-service conditions involving crafted HTTP Range headers, multiple ECH outer extension references, multipart form parsing memory-limit bypasses, and excessive HTTP/2 SETTINGS frames. It also addresses man-in-the-middle attacks involving untrusted intermediate certificates.
What traffic or input would an attacker need to send to trigger the denial-of-service issues?
The listed denial-of-service issues require crafted HTTP Range headers, multiple ECH outer extension references, multipart form data, or excessive HTTP/2 SETTINGS frames, depending on the affected component. The advisory does not state whether authentication or prior access is required.
Does the advisory provide temporary mitigations for systems that cannot be updated immediately?
No temporary mitigations or configuration workarounds are provided in the advisory data. The listed security fixes are delivered through the Collector update with supported components for a Red Hat build of OpenTelemetry.