HIGH

CVE-2026-73089

CVSS v3

7.5

HIGH

EPSS Score

0.7 %

exploit probability, as of 2026-10-17

CISA KEV

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for browserslist. Watch browserslist in CVE Watch Free account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

browserslistnpmall versions · fixed in 4.28.7

Vendor advisories

CVE-2026-73089 Red Hat Product Security119 products fixed · 37 known affected
browserslist: Browserslist: Denial of Service via unbounded memory growth from distinct query results
workload-availability/node-healthcheck-must-gather-rhel9 as a component of Node HealthCheck Operator · workload-availability/node-healthcheck-operator-bundle as a component of Node HealthCheck Operator · workload-availability/node-healthcheck-rhel9-operator as a component of Node HealthCheck Operator
RHSA-2026:83598 Red Hat Product Security1 product fixed
Red Hat Security Advisory: RHTAS 1.4.4 - Red Hat Trusted Artifact Signer Release
RHSA-2026:73987 Red Hat Product Security3 products fixed
Red Hat Security Advisory: RHOAI 3.3.7 - Red Hat OpenShift AI
RHSA-2026:70829 Red Hat Product Security1 product fixed
Red Hat Security Advisory: RHTAS 1.3.8 - Red Hat Trusted Artifact Signer Release
RHSA-2026:70267 Red Hat Product Security4 products fixed
Red Hat Security Advisory: Red Hat Quay 3.14.9
RHSA-2026:68765 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Technical preview of the satellite/iop-vulnerability-frontend-rhel9 container image

27 more advisories

Full record on NVD

Description

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 `<year>-<month>-<day>` 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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-08-11
Last Modified: 2026-08-11

Frequently asked questions

What is CVE-2026-73089?

Is CVE-2026-73089 actively exploited?

Active exploitation of CVE-2026-73089 has not been confirmed. Its EPSS score was 0.7% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-73089?

CVE-2026-73089 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Running browserslist? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

Already have an account? Open CVE WatchNo credit card required · 50 free checks/month · Free API key

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? CVE Watch alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database