Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as +() and *(), especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that can exhibit catastrophic backtracking on non-matching input. Applications are impacted when they allow untrusted users to supply glob patterns that are passed to picomatch for compilation or matching. In those cases, an attacker can cause excessive CPU consumption and block the Node.js event loop, resulting in a denial of service. Applications that only use trusted, developer-controlled glob patterns are much less likely to be exposed in a security-relevant way. This issue is fixed in picomatch 4.0.4, 3.0.2 and 2.3.2. Users should upgrade to one of these versions or later, depending on their supported release line. If upgrading is not immediately possible, avoid passing untrusted glob patterns to picomatch. Possible mitigations include disabling extglob support for untrusted patterns by using noextglob: true, rejecting or sanitizing patterns containing nested extglobs or extglob quantifiers such as +() and *(), enforcing strict allowlists for accepted pattern syntax, running matching in an isolated worker or separate process with time and resource limits, and applying application-level request throttling and input validation for any endpoint that accepts glob patterns.
CVE-2026-33671
“—” beside the score: it is equal to the CVSS score beside it.
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-03-25. A secondary CVSS source baseline 7.5; sources differ by 0.0.
Also known asEUVD-2026-16436 (ENISA EUVD) · GHSA-c2c7-rcm5-vvqj (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.Exploitation0.4% × 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
- 0.4%
- EPSS %ILE
- 36th
- 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.GitHub Security Advisory CVSS
- EG Likelihood
- 0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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, and whom BOD 26-04 binds: 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.
The score's inputs: 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
March 26, 2026
Last Modified
June 17, 2026
Advisory Details (2)
Auto-updated Aug 2, 2026ReDoS via Extglob Quantifiers in picomatch · Advisory · micromatch/picomatch · GitHub
https://github.com/micromatch/picomatch/security/advisories/GHSA-c2c7-rcm5-vvqjcommit 5eceecd27543 (micromatch/picomatch)
Patch available: micromatch/picomatch 4.0.4 (contains commit 5eceecd27543)
https://github.com/micromatch/picomatch/commit/5eceecd27543b8e056b9307d69e105ea03618a7dVendor Advisories for CVE-2026-33671(5)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:86618Red Hat Product SecurityCritical
Red Hat Security Advisory: New container image: rhceph-9.2
- RHSA-2026:56928Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.22.2 security, enhancement & bug fix update
- RHSA-2026:56431Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.18.27 security, enhancement & bug fix update
- RHSA-2026:34342Red Hat Product SecurityCritical
Red Hat Security Advisory: Cluster Observability Operator 1.5.0
- CVE-2026-33671Microsoft Security Response Center (MSRC)High
Picomatch has a ReDoS vulnerability via extglob quantifiers
Patch Availability(7)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | rhceph/rhceph-9-rhel10:1790843527 | 2026-10-21 | redhat |
| redhat | odf4/rook-ceph-rhel9-operator:1787061554 | 2026-08-19 | redhat |
| redhat | odf4/rook-ceph-rhel9-operator:1786706880 | 2026-08-18 | redhat |
| redhat | cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996 | 2026-07-01 | redhat |
| npm | picomatch @ 4.0.4 (fixes >= 4.0.0, < 4.0.4) | — | ghsa |
| npm | picomatch @ 3.0.2 (fixes >= 3.0.0, < 3.0.2) | — | ghsa |
| npm | picomatch @ 2.3.2 (fixes < 2.3.2) | — | ghsa |
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-anymatch | 3.1.1+~2.2.2-1 ... 3.1.3+~cs8.0.6-1 (7 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-anymatch | 3.1.3+~cs4.6.1-2, 3.1.3+~cs8.0.5-1, 3.1.3+~cs8.0.6-1 |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-anymatch | 3.1.3+~cs4.6.1-2, 3.1.3+~cs8.0.5-1, 3.1.3+~cs8.0.6-1 |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-anymatch | 3.1.3+~cs4.6.1-2, 3.1.3+~cs8.0.5-1 |
| — |
npm(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| picomatch | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 45× 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 97 of 131 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. 3 repeat rows among the latest 100 are merged into the row they repeat. The 34 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-01 07:53 UTCEG score recompute
- 2026-11-01 07:53 UTCGHSA enrichmentGHSA-c2c7-rcm5-vvqj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-31 06:16 UTCEG score recompute
- 2026-10-31 06:16 UTCVendor advisory
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-25 14:34 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-24 11:02 UTCEG score recompute
- 2026-10-24 11:02 UTCVendor advisory
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-18 03:46 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-17 15:43 UTCEG score recompute
Show 72 moreShow fewer
- 2026-10-17 15:43 UTCVendor advisory
- 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-12 16:13 UTCEG score recompute
- 2026-10-11 19:55 UTCEG score recompute
- 2026-10-11 17:08 UTCEG score recompute
- 2026-10-11 14:35 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-11 04:31 UTCOSV refresh
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-09-21 16:49 UTCOSV refresh
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-02 13:26 UTCOSV refresh
- 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-16 10:05 UTCEG score recompute
- 2026-08-16 10:05 UTCVendor advisory
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-14 19:26 UTCVendor advisory
- 2026-08-14 06:23 UTCEG score recompute
- 2026-08-14 06:23 UTCVendor advisory
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-12 20:40 UTCEG score recompute
- 2026-08-12 20:40 UTCVendor advisory
- 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-08-11 20:48 UTCEG score recompute
Related CVEs(same product + same vendor + same CWE)
Same vendor
10 shownredhat:RHSA-2026:34342 · redhat:RHSA-2026:56431
Frequently asked(5)
What is CVE-2026-33671?
When was the CVE record for CVE-2026-33671 published?
Is CVE-2026-33671 actively exploited?
What is the CVSS score of CVE-2026-33671?
How do I remediate CVE-2026-33671?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-33671
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