CVE-2026-41178GO-2026-5158GHSA-5WRP-CWCJ-Q835
OpenTelemetry-Go's baggage parsing no longer caps raw header length
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.42.0, 1.44.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: poc
- Automatable: yes
- Technical impact: partial
Summary
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Versions 1.41.0 and 1.43.0 removed raw-length rejection and it causes `Parse` to process arbitrarily large/invalid baggage headers and log errors, enabling DoS via oversized inputs. Versions 1.42.0 and 1.44.0 fix the issue.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: poc · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- open-telemetry go.opentelemetry.io/otel/baggage
1.41.0, 1.43.0
- open-telemetry go.opentelemetry.io/otel/propagation
1.41.0, 1.43.0
- go.opentelemetry.io/otelGo
From 1.41.0 · fixed in 1.42.0; From 1.43.0 · fixed in 1.44.0
- go.opentelemetry.io/otel/baggageGo
From 1.41.0 · fixed in 1.42.0
- go.opentelemetry.io/otel/propagationGo
From 1.41.0 · fixed in 1.42.0
- go.opentelemetry.io/otel/baggageGo
From 1.43.0 · fixed in 1.44.0
- go.opentelemetry.io/otel/propagationGo
From 1.43.0 · fixed in 1.44.0