CVE-2026-29181: CWE-770: Allocation of Resources Without Limits or Throttling in open-telemetry opentelemetry-go
CVE-2026-29181 is a high-severity vulnerability in the open-telemetry opentelemetry-go library versions 1. 36. 0 through 1. 40. 0. It involves allocation of resources without limits or throttling during parsing of multi-value baggage headers. An attacker can cause amplified CPU and memory allocations by sending many baggage header lines, even if each individual header value respects the 8192-byte limit. This issue is fixed in version 1. 41. 0.
AI Analysis
Technical Summary
The vulnerability in opentelemetry-go arises from the way multi-value baggage headers are parsed. Each header field-value is processed independently and members are aggregated across values without limiting the total resource consumption. This allows an attacker to amplify CPU usage and memory allocations by sending numerous baggage header lines, potentially leading to denial of service conditions. The affected versions are from 1.36.0 up to but not including 1.41.0. The vulnerability is tracked as CWE-770 (Allocation of Resources Without Limits or Throttling) and has a CVSS 3.1 score of 7.5, indicating high severity. The issue is resolved in version 1.41.0.
Potential Impact
The vulnerability can cause high CPU and memory consumption in affected versions of opentelemetry-go when processing many baggage header lines. This can lead to denial of service by resource exhaustion. There is no impact on confidentiality or integrity reported. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Upgrade opentelemetry-go to version 1.41.0 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory indicating the fix in 1.41.0. No other mitigations are specified.
CVE-2026-29181: CWE-770: Allocation of Resources Without Limits or Throttling in open-telemetry opentelemetry-go
Description
CVE-2026-29181 is a high-severity vulnerability in the open-telemetry opentelemetry-go library versions 1. 36. 0 through 1. 40. 0. It involves allocation of resources without limits or throttling during parsing of multi-value baggage headers. An attacker can cause amplified CPU and memory allocations by sending many baggage header lines, even if each individual header value respects the 8192-byte limit. This issue is fixed in version 1. 41. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in opentelemetry-go arises from the way multi-value baggage headers are parsed. Each header field-value is processed independently and members are aggregated across values without limiting the total resource consumption. This allows an attacker to amplify CPU usage and memory allocations by sending numerous baggage header lines, potentially leading to denial of service conditions. The affected versions are from 1.36.0 up to but not including 1.41.0. The vulnerability is tracked as CWE-770 (Allocation of Resources Without Limits or Throttling) and has a CVSS 3.1 score of 7.5, indicating high severity. The issue is resolved in version 1.41.0.
Potential Impact
The vulnerability can cause high CPU and memory consumption in affected versions of opentelemetry-go when processing many baggage header lines. This can lead to denial of service by resource exhaustion. There is no impact on confidentiality or integrity reported. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Upgrade opentelemetry-go to version 1.41.0 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory indicating the fix in 1.41.0. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-04T14:44:00.713Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5874b43e2781bad84eb00
Added to database: 4/7/2026, 10:38:03 PM
Last enriched: 4/15/2026, 3:54:17 PM
Last updated: 5/23/2026, 10:48:03 PM
Views: 73
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.