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.
CVE-2026-14257
“—” beside the score: it is equal to the CVSS score beside it.
This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (50th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-48285 (ENISA EUVD) · GHSA-mh99-v99m-4gvg (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 49EG Risk 49/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity75% × 45%Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.6% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.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
- 0.6%
- EPSS %ILE
- 50th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
July 23, 2026
Last Modified
October 24, 2026
Advisory Details (2)
Auto-updated Jul 23, 2026commit a1bd33999ea7 (juliangruber/brace-expansion)
Fix landed in juliangruber/brace-expansion commit a1bd33999ea7 — awaiting tagged release
https://github.com/juliangruber/brace-expansion/commit/a1bd33999ea75262c4749fff3bbb0d1372bd07b5GitHub - juliangruber/brace-expansion: Brace expansion, as known from sh/bash, in JavaScript · GitHub
https://github.com/juliangruber/brace-expansionVendor 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.
- RHSA-2026:92650Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.19.26 security, enhancement & bug fix update
- RHSA-2026:70588Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.17.58 security and extras update
- RHSA-2026:71179Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.6 Container Release Update
- RHSA-2026:70267Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Quay 3.14.9
- RHSA-2026:68681Red Hat Product SecurityHigh
Red Hat Security Advisory: Migration Toolkit for Containers (MTC) 1.8.17 update
- RHSA-2026:65853Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.18.55 security and extras update
- RHSA-2026:66372Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.19.47 security and extras update
- RHSA-2026:67279Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.7 Container Release Update
- +12 more
Patch Availability(30)
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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-brace-expansion | 2.0.0-1 ... 2.0.3+~1.1.2-3 (8 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-brace-expansion | 2.0.1+~1.1.0-1 ... 2.1.4+~1.1.2-1 (7 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-brace-expansion | 2.0.1+~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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-brace-expansion | 2.0.1+~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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| brace-expansion | — |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(20)
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.
- Red HatRHSA-2026:45360IMPORTANT2026-07-23
RHSA-2026:45360 — Important
- Red HatRHSA-2026:45381IMPORTANT2026-07-23
RHSA-2026:45381 — Important
- Red HatRHSA-2026:45784IMPORTANT2026-07-23
RHSA-2026:45784 — Important
- Red HatRHSA-2026:50290IMPORTANT2026-07-23
RHSA-2026:50290 — Important
- Red HatRHSA-2026:54183IMPORTANT2026-07-23
RHSA-2026:54183 — Important
- Red HatRHSA-2026:54371IMPORTANT2026-07-23
RHSA-2026:54371 — Important
- Red HatRHSA-2026:54389IMPORTANT2026-07-23
RHSA-2026:54389 — Important
- Red HatRHSA-2026:54530IMPORTANT2026-07-23
RHSA-2026:54530 — Important
- Red HatRHSA-2026:54760IMPORTANT2026-07-23
RHSA-2026:54760 — Important
- Red HatRHSA-2026:55541IMPORTANT2026-07-23
RHSA-2026:55541 — Important
- Red HatRHSA-2026:55601IMPORTANT2026-07-23
RHSA-2026:55601 — Important
- Red HatRHSA-2026:55603IMPORTANT2026-07-23
RHSA-2026:55603 — Important
- Red HatRHSA-2026:56338IMPORTANT2026-07-23
RHSA-2026:56338 — Important
- Red HatRHSA-2026:56357IMPORTANT2026-07-23
RHSA-2026:56357 — Important
- Red HatRHSA-2026:57367IMPORTANT2026-07-23
RHSA-2026:57367 — Important
- Red HatRHSA-2026:57545IMPORTANT2026-07-23
RHSA-2026:57545 — Important
- Red HatRHSA-2026:57590IMPORTANT2026-07-23
RHSA-2026:57590 — Important
- Red HatRHSA-2026:58819IMPORTANT2026-07-23
RHSA-2026:58819 — Important
- Red HatRHSA-2026:59155IMPORTANT2026-07-23
RHSA-2026:59155 — Important
- Red HatRHSA-2026:59159IMPORTANT2026-07-23
RHSA-2026:59159 — Important
Data Freshness Timeline
(refreshed 10× in last 7d / 47× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 234 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 134 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-30 22:52 UTCEG score recompute
- 2026-10-30 22:52 UTCVendor advisory
- 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-25 14:48 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-24 13:32 UTCVendor advisory
- 2026-10-24 03:50 UTCEG score recompute
- 2026-10-24 03:50 UTCVendor advisory
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-18 05:02 UTCEG score recompute
- 2026-10-17 18:25 UTCEG score recompute
- 2026-10-17 18:25 UTCVendor advisory
- 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.6% · 49th percentile
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- 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-12 16:34 UTCEG score recompute
- 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-11 20:11 UTCEG score recompute
- 2026-10-11 18:23 UTCEG score recompute
- 2026-10-11 14:56 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-04 08:22 UTCEG score recompute
- 2026-10-04 08:22 UTCVendor advisory
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-03 03:25 UTCEG score recompute
- 2026-10-03 03:25 UTCVendor advisory
- 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-01 06:18 UTCEG score recompute
- 2026-10-01 06:18 UTCVendor advisory
- 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-28 05:06 UTCEG score recompute
- 2026-09-28 05:06 UTCVendor advisory
- 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-24 13:03 UTCVendor advisory
- 2026-09-24 01:16 UTCEG score recompute
- 2026-09-24 01:16 UTCVendor advisory
- 2026-09-23 10:56 UTCVendor advisory
- 2026-09-22 22:44 UTCEG score recompute
- 2026-09-22 22:44 UTCVendor advisory
- 2026-09-20 01:47 UTCEG score recompute
- 2026-09-20 01:47 UTCVendor advisory
- 2026-09-18 22:36 UTCEG score recompute
- 2026-09-18 22:36 UTCVendor advisory
- 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-09-18 03:07 UTCEG score recompute
- 2026-09-18 03:07 UTCVendor advisory
- 2026-09-17 02:02 UTCEG score recompute
- 2026-09-17 02:02 UTCVendor advisory
- 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-09-16 06:49 UTCEG score recompute
- 2026-09-16 06:49 UTCVendor advisory
- 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-14 16:16 UTCVendor advisory
- 2026-09-14 04:21 UTCEG score recompute
- 2026-09-14 04:21 UTCVendor advisory
- 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
- 2026-09-13 16:34 UTCVendor advisory
- 2026-09-13 04:47 UTCVendor advisory
- 2026-09-12 17:00 UTCEG score recompute
- 2026-09-12 17:00 UTCVendor advisory
- 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-12 05:12 UTCVendor advisory
- 2026-09-11 16:46 UTCEG score recompute
- 2026-09-11 16:46 UTCVendor advisory
- 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.5% · 38th percentile
- 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.5% · 38th percentile
- 2026-09-11 03:13 UTCVendor advisory
- 2026-09-10 15:11 UTCEG score recompute
- 2026-09-10 15:11 UTCVendor advisory
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
- 2026-09-09 08:58 UTCEG score recompute
- 2026-09-09 08:58 UTCVendor advisory
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
- 2026-09-07 21:31 UTCEG score recompute
- 2026-09-07 21:31 UTCVendor advisory
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:11:node-brace-expansion · Debian:12:node-brace-expansion · npm:brace-expansion
Same vendor
10 shownredhat:RHSA-2026:50290 · redhat:RHSA-2026:54371 · redhat:RHSA-2026:54760
Frequently asked(5)
What is CVE-2026-14257?
When was the CVE record for CVE-2026-14257 published?
Is CVE-2026-14257 actively exploited?
What is the CVSS score of CVE-2026-14257?
How do I remediate CVE-2026-14257?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-14257
Is Your Infrastructure Affected by CVE-2026-14257?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.