CVE-2026-45149

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 80% 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, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. From 5.0.0 to before 5.0.6, the max option was being applied too late. When expanding a single large numeric range like {1..10000000}, the sequence generation loop generates all 10 million intermediate elements before the max limit is applied With max=10, the output is correctly limited to 10 items, but the process still allocates ~505 MB and spends ~800ms building the full intermediate array. This vulnerability is fixed in 5.0.6.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
19.6%
KEV
Not listed

Published

May 18, 2026

Last Modified

June 12, 2026

Advisory Details (1)

Auto-updated Jun 10, 2026
Patch available. Sources: github.
github Patch Available

Large numeric range defeats documented `max` DoS protection · Advisory · juliangruber/brace-expansion · GitHub

https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-jxxr-4gwj-5jf2

Vendor Advisories for CVE-2026-45149(8)

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

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatllvm21-main-21.1.8-6.hum12026-06-07redhat
redhatrust-main-1.96.0-1.hum12026-06-03redhat
redhatnodejs26-main-26.3.0-1.2.hum12026-06-02redhat
redhatnodejs20-main-20.20.2-1.hum12026-04-21redhat
redhatllvm-main-21.1.8-1.1.hum12026-04-11redhat
redhatyarnpkg-main-1.22.22-18.1.hum12026-04-11redhat
redhatnodejs25-main-25.9.0-1.1.hum12026-04-10redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
brace-expansion—5.0.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 68× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 02:30 UTCEPSS rescore
  4. 2026-07-04 06:31 UTCEPSS rescore
  5. 2026-07-01 15:07 UTCEPSS rescore
  6. 2026-06-30 23:22 UTCEPSS rescore
  7. 2026-06-29 21:10 UTCEG score recompute
  8. 2026-06-29 21:10 UTCVendor advisory
  9. 2026-06-29 14:06 UTCEPSS rescore
  10. 2026-06-29 14:06 UTCEPSS rescore
  11. 2026-06-28 14:07 UTCEPSS rescore
  12. 2026-06-28 10:48 UTCEG score recompute
  13. 2026-06-28 10:48 UTCVendor advisory
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-28 04:56 UTCEPSS rescore
  16. 2026-06-27 21:42 UTCEG score recompute
  17. 2026-06-27 21:42 UTCVendor advisory
  18. 2026-06-27 08:48 UTCEG score recompute
  19. 2026-06-27 08:48 UTCVendor advisory
  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-26 19:56 UTCEG score recompute
  22. 2026-06-26 19:56 UTCVendor advisory
  23. 2026-06-25 17:46 UTCEG score recompute
  24. 2026-06-25 17:46 UTCVendor advisory
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 65 more
  1. 2026-06-24 14:05 UTCEPSS rescore
  2. 2026-06-23 21:33 UTCEPSS rescore
  3. 2026-06-22 14:25 UTCEPSS rescore
  4. 2026-06-22 14:25 UTCEPSS rescore
  5. 2026-06-21 14:56 UTCEPSS rescore
  6. 2026-06-21 14:56 UTCEPSS rescore
  7. 2026-06-21 01:59 UTCEPSS rescore
  8. 2026-06-19 19:25 UTCEPSS rescore
  9. 2026-06-18 17:52 UTCEPSS rescore
  10. 2026-06-18 17:52 UTCEPSS rescore
  11. 2026-06-18 02:44 UTCEG score recompute
  12. 2026-06-17 17:53 UTCEPSS rescore
  13. 2026-06-17 13:48 UTCEG score recompute
  14. 2026-06-17 00:56 UTCEG score recompute
  15. 2026-06-16 17:52 UTCEPSS rescore
  16. 2026-06-16 12:04 UTCEG score recompute
  17. 2026-06-15 23:11 UTCEG score recompute
  18. 2026-06-15 17:49 UTCEPSS rescore
  19. 2026-06-15 00:37 UTCEG score recompute
  20. 2026-06-14 11:45 UTCEG score recompute
  21. 2026-06-13 23:00 UTCEPSS rescore
  22. 2026-06-13 22:54 UTCEG score recompute
  23. 2026-06-13 02:50 UTCEG score recompute
  24. 2026-06-12 23:12 UTCEPSS rescore
  25. 2026-06-12 23:12 UTCEPSS rescore
  26. 2026-06-12 13:55 UTCEG score recompute
  27. 2026-06-12 01:03 UTCEG score recompute
  28. 2026-06-11 14:00 UTCEPSS rescore
  29. 2026-06-11 12:12 UTCEG score recompute
  30. 2026-06-10 23:18 UTCEG score recompute
  31. 2026-06-10 22:18 UTCEPSS rescore
  32. 2026-06-10 13:22 UTCEPSS rescore
  33. 2026-06-10 13:22 UTCEPSS rescore
  34. 2026-06-10 10:27 UTCEG score recompute
  35. 2026-06-09 21:36 UTCEG score recompute
  36. 2026-06-09 08:25 UTCEG score recompute▲ 1.00
  37. 2026-06-08 23:31 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  38. 2026-06-08 14:17 UTCEPSS rescore
  39. 2026-06-08 14:17 UTCEPSS rescore
  40. 2026-06-08 10:45 UTCEG score recompute
  41. 2026-06-07 15:25 UTCEPSS rescore
  42. 2026-06-07 15:25 UTCEPSS rescore
  43. 2026-06-07 13:06 UTCEG score recompute
  44. 2026-06-06 15:27 UTCEG score recompute
  45. 2026-06-06 13:47 UTCEPSS rescore
  46. 2026-06-06 13:47 UTCEPSS rescore
  47. 2026-06-05 22:47 UTCEPSS rescore
  48. 2026-06-05 17:48 UTCEG score recompute
  49. 2026-06-05 06:10 UTCEPSS rescore
  50. 2026-06-05 06:10 UTCEPSS rescore
  51. 2026-06-04 20:09 UTCEG score recompute
  52. 2026-06-04 13:12 UTCEPSS rescore
  53. 2026-06-04 13:12 UTCEPSS rescore
  54. 2026-06-03 22:30 UTCEG score recompute
  55. 2026-06-03 00:51 UTCEG score recompute
  56. 2026-06-02 20:13 UTCEPSS rescore
  57. 2026-06-02 02:55 UTCEG score recompute
  58. 2026-06-01 13:52 UTCEPSS rescore
  59. 2026-06-01 13:52 UTCEPSS rescore
  60. 2026-06-01 05:16 UTCEG score recompute
  61. 2026-05-31 22:30 UTCEPSS rescore
  62. 2026-05-31 22:30 UTCEPSS rescore
  63. 2026-05-31 00:16 UTCEPSS rescore
  64. 2026-05-31 00:16 UTCEPSS rescore
  65. 2026-05-24 06:17 UTCEG score recompute

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-45149?
CVE-2026-45149 is a high vulnerability published on May 18, 2026. The brace-expansion library generates arbitrary strings containing a common prefix and suffix. From 5.0.0 to before 5.0.6, the max option was being applied too late. When expanding a single large numeric range like {1..10000000}, the sequence generation loop generates all 10 million intermediate…
When was CVE-2026-45149 disclosed?
CVE-2026-45149 was first published in the National Vulnerability Database on May 18, 2026, with the most recent update on June 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45149 actively exploited?
CVE-2026-45149 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45149?
CVE-2026-45149 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45149?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45149, 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.

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