CVE-2026-112006

OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation

8.3 HighFix available

OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 contains an improper certificate validation vulnerability that disables TLS verification when OTEL_EXPORTER_OTLP_CERTIFICATE variables are empty strings. Man-in-the-middle attackers can impersonate the collector to read or alter exported traces, metrics, and logs, including authentication headers from OTEL_EXPORTER_OTLP_HEADERS.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: Low
Availability: None

Exploit likelihood

0.21%Unchanged since Oct 19, 2026

What each source reports

CVE List Score used 8.3

OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation

Record: CVE-2026-112006
CVSS 4.0: 8.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness: CWE-295
Updated: 2026-11-02

EUVDEUVD-2026-103459 8.3

Record: EUVD-2026-103459
CVSS 4.0: 8.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-6469-8p9h-mmvm 8.3

OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 contains an improper...

Record: GHSA-6469-8p9h-mmvm
CVSS 4.0: 8.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness: CWE-295
Updated: 2026-11-02

NVD 8.3

Record: CVE-2026-112006
CVSS 4.0: 8.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness: CWE-295
Updated: 2026-11-02

OSV 8.3

OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation

Record: CVE-2026-112006
CVSS 4.0: 8.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-295
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-112006 8.3

Record: DEBIAN-CVE-2026-112006
CVSS 4.0: 8.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-112006 8.3

Record: UBUNTU-CVE-2026-112006
CVSS 4.0: 8.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Updated: 2026-11-02

Affected products

opentelemetry opentelemetry-exporter-otlp-proto-http

Affected packages

Affected packages
Package	Affected	Fixed
`python-opentelemetry` Debian:14	before 1.45.1-1, plus listed versions 1.35.0-21.38.0-11.38.0-21.39.1-11.39.1-2 Show 7 moreShow less 1.40.0-11.41.0-11.41.0-21.42.1-11.43.0-11.44.0-11.44.0-2	1.45.1-1
`python-opentelemetry` Ubuntu:26.10	All versions, plus listed versions 1.39.1-21.42.1-11.43.0-11.44.0-11.44.0-2	None known
`python-opentelemetry` Ubuntu:26.04:LTS	All versions, plus listed versions 1.38.0-11.38.0-21.39.1-11.39.1-2	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-112006 is a high vulnerability (CVSS 8.3) in Opentelemetry Opentelemetry-exporter-otlp-proto-http, published October 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in python-opentelemetry 1.45.1-1.

References

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