CVE-2026-102276

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: 0.4% (26th percentile of EPSS-scored CVEs). 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 — Patch released 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: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.19, 2.1.5, 3.0.7, and 5.0.10, crafted brace patterns can exhaust the native stack in parseCommaParts because parseCommaParts recursively processes the remainder once per brace group and uses push.apply to pass every element of a very large comma-part array as a function argument. Patterns containing many comma-separated brace groups trigger the recursive path, while the large array triggers the argument-array path without deep recursion. These paths cause recursive and argument-array native stack exhaustion before max or maxLength can limit output, potentially terminating the Node.js process in a process-terminating denial of service. This issue is fixed in versions 1.1.19, 2.1.5, 3.0.7, and 5.0.10.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
26th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 28, 2026

Last Modified

September 30, 2026

Advisory Details (5)

Auto-updated Sep 28, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github_commit

commit 6735c94873ca (juliangruber/brace-expansion)

Fix landed in juliangruber/brace-expansion commit 6735c94873ca — awaiting tagged release

https://github.com/juliangruber/brace-expansion/commit/6735c94873ca570bcdd6a0690033bdd3126379d3
github_commit

commit 5171e681c092 (juliangruber/brace-expansion)

Fix landed in juliangruber/brace-expansion commit 5171e681c092 — awaiting tagged release

https://github.com/juliangruber/brace-expansion/commit/5171e681c0922b7ae8bfaf9a331e309107be6edc
github_commit

commit 316359e6019c (juliangruber/brace-expansion)

Fix landed in juliangruber/brace-expansion commit 316359e6019c — awaiting tagged release

https://github.com/juliangruber/brace-expansion/commit/316359e6019c39b3254c8ba8e25dc586a480652c
github_commit

commit 0bcbfc0a5928 (juliangruber/brace-expansion)

Fix landed in juliangruber/brace-expansion commit 0bcbfc0a5928 — awaiting tagged release

https://github.com/juliangruber/brace-expansion/commit/0bcbfc0a5928c3073d48f42999d1ce4fc1c42fbc
github Patch Available🟡 PoC Available

DoS via uncontrolled recursion in parseCommaParts causing stack exhaustion · Advisory · juliangruber/brace-expansion · GitHub

https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-6j4f-fj2g-mc7p

Vendor Advisories for CVE-2026-102276(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatnodejs22-main-10.9.9-1.22.23.3.2.3.2.2.hum12026-09-30redhat
redhatnodejs24-main-11.19.0-1.24.21.0.1.2.hum12026-09-30redhat
redhatnodejs26-main-11.19.1-1.26.10.0.0.3.hum12026-09-30redhat

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—5.0.10—

Weakness Classification(2)

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

Additional Vendor Advisories

(3)

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 21× in last 7d / 21× 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. 2026-10-04 02:00 UTCEG score recompute
  2. 2026-10-04 02:00 UTCVendor advisory
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-03 13:02 UTCVendor advisory
  5. 2026-10-03 00:00 UTCEG score recompute
  6. 2026-10-03 00:00 UTCVendor advisory
  7. 2026-10-02 11:01 UTCVendor advisory
  8. 2026-10-01 22:03 UTCEG score recompute
  9. 2026-10-01 22:03 UTCVendor advisory
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 09:00 UTCVendor advisory
  12. 2026-09-30 16:17 UTCEG score recompute
  13. 2026-09-30 15:02 UTCEPSS rescore
  14. 2026-09-30 03:18 UTCEG score recompute
  15. 2026-09-29 15:20 UTCEPSS rescore
  16. 2026-09-29 14:18 UTCEG score recompute
  17. 2026-09-29 13:49 UTCEG score recompute
  18. 2026-09-29 10:18 UTCEG score recompute
  19. 2026-09-28 21:18 UTCEG score recompute
  20. 2026-09-28 20:58 UTCEG score recompute
  21. 2026-09-28 20:57 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same vendor + same CWE)

Same vendor

2 shown

redhat:RHSA-2026:74161

Frequently asked(5)

What is CVE-2026-102276?
CVE-2026-102276 is a high vulnerability published on September 28, 2026. The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.19, 2.1.5, 3.0.7, and 5.0.10, crafted brace patterns can exhaust the native stack in parseCommaParts because parseCommaParts recursively processes the remainder once per brace group and uses…
When was CVE-2026-102276 disclosed?
CVE-2026-102276 was first published on September 28, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-102276 actively exploited?
CVE-2026-102276 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102276?
CVE-2026-102276 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102276?
A fix for CVE-2026-102276 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-102276 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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