CVE-2026-73089

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%, top 71% 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 — 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%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, index.js retains every distinct (queries, context) result in cache and every parseQueries() AST in parseCache without a size cap, TTL, or eviction, allowing an attacker who can influence repeated browserslist() query values, including valid since -- queries, to bypass the caller-controlled BROWSERSLIST_DISABLE_CACHE mitigation and cause linear memory growth followed by an out-of-memory process crash. This issue is fixed in version 4.28.7.

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
29%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 13, 2026

Advisory Details (3)

Auto-updated Aug 12, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

Unbounded memory growth (no cache eviction) via distinct query results, leading to eventual OOM · Advisory · browserslist/browserslist · GitHub

https://github.com/browserslist/browserslist/security/advisories/GHSA-c83g-rgw3-j3cx
github_release Patch Available

4.28.7

Patch available: browserslist/browserslist 4.28.7

https://github.com/browserslist/browserslist/releases/tag/4.28.7
github_commit Patch Available

commit f2931a3ff2a3 (browserslist/browserslist)

Patch available: browserslist/browserslist 4.28.7 (contains commit f2931a3ff2a3)

https://github.com/browserslist/browserslist/commit/f2931a3ff2a3a31abf84ef01a7400b270aad6405

Vendor Advisories for CVE-2026-73089(3)

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
redhatgrafana13-1-main-13.1.3-0.1.1.hum12026-08-13redhat
redhatgrafana12-4-main-12.4.8-0.1.1.hum12026-08-13redhat
redhatdiscovery/discovery-ui-rhel9:17866348252026-08-13redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 18× 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. 2026-08-15 10:51 UTCEG score recompute
  2. 2026-08-15 10:51 UTCVendor advisory
  3. 2026-08-15 01:31 UTCEPSS rescore
  4. 2026-08-15 00:00 UTCVendor advisory
  5. 2026-08-14 13:09 UTCVendor advisory
  6. 2026-08-14 02:19 UTCEG score recompute
  7. 2026-08-14 02:19 UTCVendor advisory
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-13 15:28 UTCEG score recompute
  10. 2026-08-13 15:28 UTCVendor advisory
  11. 2026-08-13 14:25 UTCEG score recompute
  12. 2026-08-13 14:25 UTCVendor advisory
  13. 2026-08-13 13:06 UTCVendor advisory
  14. 2026-08-12 15:24 UTCEG score recompute
  15. 2026-08-12 13:51 UTCEPSS rescore
  16. 2026-08-11 17:39 UTCEG score recompute
  17. 2026-08-11 17:14 UTCEG score recompute
  18. 2026-08-11 17:11 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73089?
CVE-2026-73089 is a high vulnerability published on August 11, 2026. Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, index.js retains every distinct (queries, context) result in cache and every parseQueries() AST in parseCache without a size cap, TTL, or eviction, allowing an attacker…
When was CVE-2026-73089 disclosed?
CVE-2026-73089 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73089 actively exploited?
CVE-2026-73089 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 71.0% of all scored CVEs.
What is the CVSS score of CVE-2026-73089?
CVE-2026-73089 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-73089?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73089, 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

Explore the affected products and dependency analysis for CVE-2026-73089

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