CVE-2026-14257

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 61% 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
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

brace-expansion through 5.0.7 is vulnerable to denial of service via memory exhaustion. The expand() function limits the number of results with a max option (default 100,000) but does not bound the length of each result string. By chaining multiple brace groups, an attacker keeps the result count under the limit while making each result progressively longer, so total memory scales with both count and string length until the process hits a fatal, uncatchable out-of-memory error. About 7.5 KB of input ('{a,b}'.repeat(1500)) crashes a default Node.js process. Any application that passes attacker-influenced strings to brace-expansion.expand() - directly or transitively via minimatch / glob brace patterns - can be crashed by a small request. Fixed in 5.0.8 by adding a maxLength option (default 4,000,000) that bounds accumulated output and intermediate arrays.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

July 23, 2026

Last Modified

August 27, 2026

Advisory Details (2)

Auto-updated Jul 23, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit a1bd33999ea7 (juliangruber/brace-expansion)

Fix landed in juliangruber/brace-expansion commit a1bd33999ea7 — awaiting tagged release

https://github.com/juliangruber/brace-expansion/commit/a1bd33999ea75262c4749fff3bbb0d1372bd07b5
generic

GitHub - juliangruber/brace-expansion: Brace expansion, as known from sh/bash, in JavaScript · GitHub

https://github.com/juliangruber/brace-expansion

Vendor Advisories for CVE-2026-14257(20)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatansible-automation-platform/bootc-automation-portal-rhel9:17889435312026-09-09redhat
redhatnodejs22-1:22.23.2-1.el10_02026-09-08redhat
redhatnodejs:22-9060020260901085634.rhel92026-09-02redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17878373082026-09-01redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17875903722026-09-01redhat
redhatopenshift-service-mesh/kiali-ossmc-rhel9:17870770282026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17871656832026-08-25redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17871582312026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870921982026-08-25redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17871580952026-08-25redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17870133882026-08-25redhat
redhatopenshift-service-mesh/kiali-ossmc-rhel9:17870763222026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870922552026-08-25redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17870809272026-08-25redhat
redhatansible-automation-platform-25/lightspeed-rhel8:17872293852026-08-24redhat
redhatansible-automation-platform-26/lightspeed-rhel9:17872440792026-08-24redhat
redhatnodejs24-1:24.18.0-5.el10_22026-08-24redhat
redhatrh-podman-desktop-0:1.1.2-1.el10_22026-08-20redhat
redhatansible-automation-platform/automation-portal:17870471882026-08-18redhat
redhatansible-automation-platform/automation-portal:17870471142026-08-18redhat
redhatnodejs22-1:22.23.1-6.el10_22026-08-17redhat
redhatnodejs:24-9080020260806135511.rhel92026-08-17redhat
redhatnodejs:22-9080020260806135640.rhel92026-08-17redhat
redhatdiscovery/discovery-ui-rhel9:17866348252026-08-13redhat
redhatnodejs:22-8100020260807115047.6d8804032026-08-13redhat
redhatnodejs24-main-24.18.1-0.2.1.hum12026-08-12redhat
redhatnodejs:24-8100020260807112957.6d8804032026-08-12redhat
redhatnodejs26-main-26.7.0-1.5.2.hum12026-08-12redhat
redhatgrafana12-4-main-12.4.6-0.4.hum12026-08-04redhat
redhatnodejs24-main-24.18.0-0.5.hum12026-07-25redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
node-brace-expansion2.0.0-1 ... 2.0.3+~1.1.2-3 (8 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
node-brace-expansion2.0.1+~1.1.0-1 ... 2.1.4+~1.1.2-1 (7 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
node-brace-expansion2.0.1+~1.1.0-2, 2.0.3+~1.1.2-1, 2.0.3+~1.1.2-2, 2.0.3+~1.1.2-3, 2.1.4+~1.1.2-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
node-brace-expansion2.0.1+~1.1.0-2, 2.0.3+~1.1.2-1, 2.0.3+~1.1.2-2, 2.0.3+~1.1.2-3, 2.1.4+~1.1.2-1——
npm(1)
PackageVulnerable rangeFixed inDependents
brace-expansion—1.1.17—

Weakness Classification(2)

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

Additional Vendor Advisories

(12)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 20× in last 7d / 86× 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.

Showing the most recent 100 of 159 total refreshes for this CVE.

  1. 2026-09-14 16:16 UTCVendor advisory
  2. 2026-09-14 04:21 UTCEG score recompute
  3. 2026-09-14 04:21 UTCVendor advisory
  4. 2026-09-13 16:46 UTCEPSS rescore
  5. 2026-09-13 16:34 UTCVendor advisory
  6. 2026-09-13 04:47 UTCVendor advisory
  7. 2026-09-12 17:00 UTCEG score recompute
  8. 2026-09-12 17:00 UTCVendor advisory
  9. 2026-09-12 15:00 UTCEPSS rescore
  10. 2026-09-12 05:12 UTCVendor advisory
  11. 2026-09-11 16:46 UTCEG score recompute
  12. 2026-09-11 16:46 UTCVendor advisory
  13. 2026-09-11 14:52 UTCEPSS rescore
  14. 2026-09-11 09:36 UTCEPSS rescore
  15. 2026-09-11 03:13 UTCVendor advisory
  16. 2026-09-10 15:11 UTCEG score recompute
  17. 2026-09-10 15:11 UTCVendor advisory
  18. 2026-09-10 09:34 UTCEPSS rescore
  19. 2026-09-09 08:58 UTCEG score recompute
  20. 2026-09-09 08:58 UTCVendor advisory
  21. 2026-09-08 22:00 UTCEPSS rescore
  22. 2026-09-07 21:31 UTCEG score recompute
  23. 2026-09-07 21:31 UTCVendor advisory
  24. 2026-09-07 16:01 UTCEPSS rescore
  25. 2026-09-06 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-09-06 08:31 UTCVendor advisory
  2. 2026-09-05 19:28 UTCEG score recompute
  3. 2026-09-05 19:28 UTCVendor advisory
  4. 2026-09-05 06:59 UTCEG score recompute
  5. 2026-09-05 06:59 UTCVendor advisory
  6. 2026-09-04 13:16 UTCEG score recompute
  7. 2026-09-04 13:16 UTCVendor advisory
  8. 2026-09-04 05:06 UTCEPSS rescore
  9. 2026-09-02 14:11 UTCEPSS rescore
  10. 2026-09-01 23:23 UTCEG score recompute
  11. 2026-09-01 23:23 UTCVendor advisory
  12. 2026-09-01 13:53 UTCEPSS rescore
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-08-31 00:18 UTCEG score recompute
  15. 2026-08-31 00:18 UTCVendor advisory
  16. 2026-08-30 19:17 UTCEPSS rescore
  17. 2026-08-30 12:31 UTCEG score recompute
  18. 2026-08-30 12:31 UTCVendor advisory
  19. 2026-08-30 01:21 UTCEPSS rescore
  20. 2026-08-30 00:34 UTCEG score recompute
  21. 2026-08-30 00:34 UTCVendor advisory
  22. 2026-08-28 21:40 UTCEPSS rescore
  23. 2026-08-27 18:55 UTCEG score recompute
  24. 2026-08-27 18:55 UTCVendor advisory
  25. 2026-08-27 14:24 UTCEPSS rescore
  26. 2026-08-27 04:20 UTCVendor advisory
  27. 2026-08-26 16:20 UTCEG score recompute
  28. 2026-08-26 16:20 UTCVendor advisory
  29. 2026-08-26 06:53 UTCVendor advisory
  30. 2026-08-25 18:17 UTCEG score recompute
  31. 2026-08-25 18:17 UTCVendor advisory
  32. 2026-08-25 13:48 UTCEPSS rescore
  33. 2026-08-25 06:15 UTCVendor advisory
  34. 2026-08-24 18:28 UTCEG score recompute
  35. 2026-08-24 18:28 UTCVendor advisory
  36. 2026-08-24 06:36 UTCVendor advisory
  37. 2026-08-23 18:49 UTCVendor advisory
  38. 2026-08-23 07:03 UTCEG score recompute
  39. 2026-08-23 07:03 UTCVendor advisory
  40. 2026-08-23 00:19 UTCEPSS rescore
  41. 2026-08-22 19:16 UTCVendor advisory
  42. 2026-08-22 07:29 UTCEG score recompute
  43. 2026-08-22 07:29 UTCVendor advisory
  44. 2026-08-21 23:48 UTCEPSS rescore
  45. 2026-08-21 19:42 UTCVendor advisory
  46. 2026-08-21 07:55 UTCEG score recompute
  47. 2026-08-21 07:55 UTCVendor advisory
  48. 2026-08-20 22:55 UTCEPSS rescore
  49. 2026-08-20 20:08 UTCVendor advisory
  50. 2026-08-20 08:21 UTCVendor advisory
  51. 2026-08-19 20:34 UTCEG score recompute
  52. 2026-08-19 20:34 UTCVendor advisory
  53. 2026-08-19 17:03 UTCEPSS rescore
  54. 2026-08-19 08:25 UTCVendor advisory
  55. 2026-08-18 20:38 UTCEG score recompute
  56. 2026-08-18 20:38 UTCVendor advisory
  57. 2026-08-18 13:48 UTCEPSS rescore
  58. 2026-08-18 08:51 UTCVendor advisory
  59. 2026-08-17 20:24 UTCEG score recompute
  60. 2026-08-17 20:24 UTCVendor advisory
  61. 2026-08-17 07:14 UTCVendor advisory
  62. 2026-08-16 19:28 UTCEG score recompute
  63. 2026-08-16 19:28 UTCVendor advisory
  64. 2026-08-16 14:56 UTCEPSS rescore
  65. 2026-08-16 07:39 UTCEG score recompute
  66. 2026-08-16 07:39 UTCVendor advisory
  67. 2026-08-16 02:14 UTCEPSS rescore
  68. 2026-08-15 19:53 UTCVendor advisory
  69. 2026-08-15 08:06 UTCEG score recompute
  70. 2026-08-15 08:06 UTCVendor advisory
  71. 2026-08-15 01:30 UTCEPSS rescore
  72. 2026-08-14 20:19 UTCVendor advisory
  73. 2026-08-14 08:33 UTCEG score recompute
  74. 2026-08-14 08:33 UTCVendor advisory
  75. 2026-08-13 22:00 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-14257?
CVE-2026-14257 is a high vulnerability published on July 23, 2026. brace-expansion through 5.0.7 is vulnerable to denial of service via memory exhaustion. The expand() function limits the number of results with a max option (default 100,000) but does not bound the length of each result string. By chaining multiple brace groups, an attacker keeps the result count…
When was CVE-2026-14257 disclosed?
CVE-2026-14257 was first published in the National Vulnerability Database on July 23, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14257 actively exploited?
CVE-2026-14257 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 61.0% of all scored CVEs.
What is the CVSS score of CVE-2026-14257?
CVE-2026-14257 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-14257?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14257, 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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