Browserslist: Unbounded memory growth (no cache eviction) via distinct query results, leading to eventual OOM
High-risk advisory
CVE-2026-73089
Summary
Browserslist: Unbounded memory growth (no cache eviction) via distinct query results, leading to eventual OOM
Why it matters
GitHub has published a reviewed security advisory for browserslist. Prioritize it with other application dependency updates, especially because EPSS places it in the 29% percentile.
Operator check
Check whether browserslist is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.4%; percentile: 29%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.