CVE-2026-48504

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: 0.4%, top 65% 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
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

OpenTelemetry Rust is the Rust OpenTelemetry implementation. In 0.32.0 and earlier, BaggagePropagator::extract_with_context in opentelemetry_sdk did not enforce W3C Baggage size limits before parsing an inbound baggage header, so a large attacker-controlled header could cause unnecessary CPU work and short-lived heap allocations while parsing entries later discarded by the SDK's baggage storage limits. Services that accept untrusted inbound propagation headers may experience increased per-request resource usage when processing oversized baggage headers. This issue is fixed in version 0.32.1.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jul 17, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Unbounded memory allocation in W3C Baggage propagation · Advisory · open-telemetry/opentelemetry-rust · GitHub

https://github.com/open-telemetry/opentelemetry-rust/security/advisories/GHSA-w9wp-h8wv-79jx
github_commit Patch Available

commit a389ca6b3e41 (open-telemetry/opentelemetry-rust)

Patch available: open-telemetry/opentelemetry-rust opentelemetry-semantic-conventions-0.32.1 (contains commit a389ca6b3e41)

https://github.com/open-telemetry/opentelemetry-rust/commit/a389ca6b3e416416bc8fc9b01cf6076b9182ed14

Vendor Advisories for CVE-2026-48504(1)

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

Affected Packages

(1 across 1 ecosystem)
crates.io(1)
PackageVulnerable rangeFixed inDependents
opentelemetry_sdk—0.32.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 38× 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. 2026-09-12 15:43 UTCEG score recompute
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-10 09:35 UTCEPSS rescore
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-04 05:06 UTCEPSS rescore
  8. 2026-09-02 14:12 UTCEPSS rescore
  9. 2026-09-01 13:54 UTCEPSS rescore
  10. 2026-09-01 04:40 UTCEPSS rescore
  11. 2026-08-30 19:31 UTCEG score recompute
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-28 21:41 UTCEPSS rescore
  15. 2026-08-27 23:18 UTCEG score recompute
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-25 13:49 UTCEPSS rescore
  19. 2026-08-24 13:09 UTCEG score recompute
  20. 2026-08-23 11:32 UTCEG score recompute
  21. 2026-08-23 00:19 UTCEPSS rescore
  22. 2026-08-22 10:12 UTCEG score recompute
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-21 08:23 UTCEG score recompute
  25. 2026-08-20 22:55 UTCEPSS rescore
Show 55 more
  1. 2026-08-20 07:02 UTCEG score recompute
  2. 2026-08-19 17:04 UTCEPSS rescore
  3. 2026-08-19 01:21 UTCEG score recompute
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-17 11:10 UTCEG score recompute
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 09:49 UTCEG score recompute
  9. 2026-08-16 02:14 UTCEPSS rescore
  10. 2026-08-15 08:29 UTCEG score recompute
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 06:28 UTCEG score recompute
  13. 2026-08-13 22:00 UTCEPSS rescore
  14. 2026-08-13 05:07 UTCEG score recompute
  15. 2026-08-12 13:51 UTCEPSS rescore
  16. 2026-08-12 03:46 UTCEG score recompute
  17. 2026-08-11 02:25 UTCEG score recompute
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-10 01:04 UTCEG score recompute
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-08 23:44 UTCEG score recompute
  22. 2026-08-08 16:37 UTCEPSS rescore
  23. 2026-08-07 22:23 UTCEG score recompute
  24. 2026-08-06 21:03 UTCEG score recompute
  25. 2026-08-06 13:47 UTCEPSS rescore
  26. 2026-08-05 19:42 UTCEG score recompute
  27. 2026-08-05 19:17 UTCEPSS rescore
  28. 2026-08-04 18:22 UTCEG score recompute
  29. 2026-08-04 15:10 UTCEPSS rescore
  30. 2026-08-04 10:39 UTCEPSS rescore
  31. 2026-08-03 16:46 UTCEG score recompute
  32. 2026-08-03 10:36 UTCEPSS rescore
  33. 2026-08-02 15:26 UTCEG score recompute
  34. 2026-08-02 02:27 UTCEPSS rescore
  35. 2026-08-01 14:05 UTCEG score recompute
  36. 2026-08-01 04:16 UTCEPSS rescore
  37. 2026-07-31 12:45 UTCEG score recompute
  38. 2026-07-30 16:28 UTCEPSS rescore
  39. 2026-07-30 11:11 UTCEG score recompute
  40. 2026-07-30 01:30 UTCEPSS rescore
  41. 2026-07-29 09:20 UTCEG score recompute
  42. 2026-07-28 15:37 UTCEPSS rescore
  43. 2026-07-28 07:59 UTCEG score recompute
  44. 2026-07-27 06:34 UTCEG score recompute
  45. 2026-07-26 14:54 UTCEPSS rescore
  46. 2026-07-26 05:11 UTCEG score recompute
  47. 2026-07-25 14:18 UTCEPSS rescore
  48. 2026-07-24 14:18 UTCEPSS rescore
  49. 2026-07-23 14:18 UTCEPSS rescore
  50. 2026-07-23 03:18 UTCEG score recompute
  51. 2026-07-22 14:08 UTCEPSS rescore
  52. 2026-07-21 15:25 UTCEPSS rescore
  53. 2026-07-20 17:08 UTCEPSS rescore
  54. 2026-07-19 02:29 UTCEPSS rescore
  55. 2026-06-25 18:46 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-48504?
CVE-2026-48504 is a medium vulnerability published on June 25, 2026. OpenTelemetry Rust is the Rust OpenTelemetry implementation. In 0.32.0 and earlier, BaggagePropagator::extractwithcontext in opentelemetry_sdk did not enforce W3C Baggage size limits before parsing an inbound baggage header, so a large attacker-controlled header could cause unnecessary CPU work and…
When was CVE-2026-48504 disclosed?
CVE-2026-48504 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48504 actively exploited?
CVE-2026-48504 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.7% of all scored CVEs.
What is the CVSS score of CVE-2026-48504?
CVE-2026-48504 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-48504?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48504, 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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