UBUNTU-CVE-2026-81869

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Source
https://ubuntu.com/security/CVE-2026-81869
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81869.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-81869
Upstream
Published
2026-09-18T00:00:00Z
Modified
2026-09-18T12:30:21Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 1.10.0 until 1.33.0, the sdk/trace/span.go attribute truncation path can fail to enforce AttributeValueLengthLimit for string and string-slice attributes containing the valid Unicode replacement character U+FFFD. safeTruncateValidUTF8 treats the valid replacement rune as invalid UTF-8 and returns the original input, while strings.ToValidUTF8 leaves that valid rune unchanged, so a second safeTruncate attempt can also return the oversized value. An attacker who controls span attribute content can retain values longer than the configured limit, increasing per-span memory use and weakening denial-of-service protection in the instrumented process. This issue is fixed in version 1.33.0.

References

Affected packages

Ubuntu:22.04:LTS / golang-opentelemetry-otel

Package

Name
golang-opentelemetry-otel
Purl
pkg:deb/ubuntu/golang-opentelemetry-otel?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-opentelemetry-otel-dev",
            "binary_version": "1.1.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81869.json"

Ubuntu:24.04:LTS / golang-opentelemetry-otel

Package

Name
golang-opentelemetry-otel
Purl
pkg:deb/ubuntu/golang-opentelemetry-otel?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.16.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-opentelemetry-otel-dev",
            "binary_version": "1.16.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81869.json"

Ubuntu:26.04:LTS / golang-opentelemetry-otel

Package

Name
golang-opentelemetry-otel
Purl
pkg:deb/ubuntu/golang-opentelemetry-otel?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.31.0-4
1.31.0-5
1.31.0-6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-opentelemetry-otel-dev",
            "binary_version": "1.31.0-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81869.json"