7.5

CVE-2026-73089: Browserslist: Unbounded memory growth (no cache eviction) via distinct query results, leading to eventual OOM

Awaiting analysis
AliasesUBUNTU-CVE-2026-73089DEBIAN-CVE-2026-73089CGA-28gp-7g97-mqmx
Published 11-08-2026Last modified 13-08-2026

Vulnerability summary

CVE-2026-73089 is a high (CVSS 7.5) vulnerability in browserslist. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 51.4% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.66%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 3
OPENSUSE-SU-2026:11680-1OPENSUSE-SU-2026:21602-1RHSA-2026:54517RHSA-2026:54518CGA-WG9H-X9CC-4P43

Timeline

  1. 11-08-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.66% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard49 products
  • airflow-2All versions (No fix recorded)
  • airflow-core-2All versions (No fix recorded)
  • arangodb-3.11< 3.11.14.5-r15
  • arangodb-3.12< 3.12.9.4-r28
  • argo-workflows-ui-4.0< 4.0.11-r0
Wolfi10 products
  • argo-workflows-ui-4.0< 4.0.11-r0
  • jupyter-base-notebook< 7.6.3-r2
  • katib-suggestion-hyperopt< 0.19.0-r40
  • langfuse-3-compat< 3.225.7-r6
  • langfuse-3-worker< 3.225.7-r4
Browserslist1 product
Debian1 product
  • node-browserslistAll versions (No fix recorded) | < 4.28.7+~cs8.16.65-1
Npm1 product
  • browserslist< 4.28.7
Ubuntu1 product
  • node-browserslistAll versions (No fix recorded)

6 vendors · 63 products

References

9 links