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Not in CISA KEV
HIGH severity

uPlot Prototype Pollution vulnerabilityGHSA-34q8-jcq6-mc37

HIGHFix: leeoniya/uPlot@5756e3e

GHSA-34q8-jcq6-mc37 is a high-severity (CVSS 8.2) CWE-1321 vulnerability in uplot. A fix is available for uplot — see the affected versions and patch details below.

Also known asCVE-2024-21489
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for GHSA-34q8-jcq6-mc37.

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs54th percentile — riskier than 54% of all scored CVEsHighest risk
0.00%0.40%0.81%1.21%0.2%0.7%Jun 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

100other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
uplotnpm
1.1Mdownloads / week

Description

Versions of the package uplot before 1.6.31 are vulnerable to Prototype Pollution via the uplot.assign function due to missing check if the attribute resolves to the object prototype.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmuplotall versions1.6.31npm install uplot@1.6.31

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for uplot, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update uplot to 1.6.31 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-34q8-jcq6-mc37 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

Grafana is not impacted by this CVE, as the vulnerable `uplot.assign` function is not utilized in Grafana on Red Hat Enterprise Linux. Only RHEL-8.4.z having the issue.

Workaround published by Red Hat
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Source: Red Hat security advisory for GHSA-34q8-jcq6-mc37 (CC BY 4.0)
ProductFixed inAdvisory
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportgrafana-0:7.3.6-7.el8_4RHSA-2024:8083

Frequently Asked Questions

Versions of the package uplot before 1.6.31 are vulnerable to Prototype Pollution via the uplot.assign function due to missing check if the attribute resolves to the object prototype.
O3 Security · Impact-Aware SCA

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uPlot Prototype Pollution vulnerability (High 8.2)