CVE-2026-41178

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 85% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
14.6%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 18, 2026

Advisory Details (2)

Auto-updated Jun 17, 2026
🔬 Proof of concept available. Patch available. Sources: github_pr, github.
github Patch Available🟡 PoC Available

Baggage parsing no longer caps raw header length · Advisory · open-telemetry/opentelemetry-go · GitHub

https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835
github_pr

Comply with W3C Baggage specification limits

Fix merged in open-telemetry/opentelemetry-go PR #7880 on 2026-02-28 — awaiting tagged release

https://github.com/open-telemetry/opentelemetry-go/pull/7880

Vendor Advisories for CVE-2026-41178(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFixed inDependents
go.opentelemetry.io/otel/baggage1.43.01.44.0—
go.opentelemetry.io/otel/propagation1.43.01.44.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 16:57 UTCEPSS rescore
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  8. 2026-07-11 19:49 UTCEG score recompute
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  12. 2026-07-08 15:15 UTCEPSS rescore
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  14. 2026-07-06 16:27 UTCEPSS rescore
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  16. 2026-07-06 02:23 UTCEPSS rescore
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  19. 2026-07-02 10:29 UTCEG score recompute
  20. 2026-07-01 15:06 UTCEPSS rescore
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  22. 2026-06-30 23:22 UTCEPSS rescore
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  25. 2026-06-28 18:32 UTCEG score recompute
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  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-27 18:05 UTCEG score recompute
  4. 2026-06-27 03:08 UTCEPSS rescore
  5. 2026-06-26 16:51 UTCEG score recompute
  6. 2026-06-25 16:42 UTCEG score recompute
  7. 2026-06-25 13:49 UTCEPSS rescore
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  9. 2026-06-24 16:31 UTCEG score recompute
  10. 2026-06-24 14:05 UTCEPSS rescore
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  17. 2026-06-19 19:25 UTCEPSS rescore
  18. 2026-06-18 17:52 UTCEPSS rescore
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  20. 2026-06-18 03:52 UTCEG score recompute
  21. 2026-06-17 17:53 UTCEPSS rescore
  22. 2026-06-17 03:43 UTCEG score recompute
  23. 2026-06-16 17:52 UTCEPSS rescore
  24. 2026-06-16 03:31 UTCEG score recompute
  25. 2026-06-15 17:49 UTCEPSS rescore
  26. 2026-06-15 03:21 UTCEG score recompute
  27. 2026-06-14 03:12 UTCEG score recompute
  28. 2026-06-13 23:00 UTCEPSS rescore
  29. 2026-06-13 02:55 UTCEG score recompute
  30. 2026-06-12 23:12 UTCEPSS rescore
  31. 2026-06-12 23:12 UTCEPSS rescore
  32. 2026-06-12 02:46 UTCEG score recompute
  33. 2026-06-11 14:00 UTCEPSS rescore
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  35. 2026-06-10 22:18 UTCEPSS rescore
  36. 2026-06-10 13:22 UTCEPSS rescore
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  38. 2026-06-10 02:27 UTCEG score recompute
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  40. 2026-06-08 14:17 UTCEPSS rescore
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  42. 2026-06-08 02:08 UTCEG score recompute
  43. 2026-06-07 15:25 UTCEPSS rescore
  44. 2026-06-07 15:25 UTCEPSS rescore
  45. 2026-06-07 01:59 UTCEG score recompute
  46. 2026-06-06 13:47 UTCEPSS rescore
  47. 2026-06-06 13:47 UTCEPSS rescore
  48. 2026-06-06 01:49 UTCEG score recompute
  49. 2026-06-05 22:47 UTCEPSS rescore
  50. 2026-06-05 01:40 UTCEG score recompute
  51. 2026-06-04 01:31 UTCEG score recompute
  52. 2026-06-03 01:22 UTCEG score recompute
  53. 2026-06-02 01:13 UTCEG score recompute
  54. 2026-06-01 01:04 UTCEG score recompute
  55. 2026-05-28 17:06 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-41178?
CVE-2026-41178 is a medium vulnerability published on May 28, 2026. 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.
When was CVE-2026-41178 disclosed?
CVE-2026-41178 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41178 actively exploited?
CVE-2026-41178 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41178?
CVE-2026-41178 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-41178?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41178, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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