CVE-2024-21489

uPlot Prototype Pollution vulnerability

8.8 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: Low

Exploit likelihood

0.71%Up 0.7 points since Oct 2, 2024

What each source reports

CVE List Score used 8.8

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.

Record: CVE-2024-21489
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L/E:P
Weakness: CWE-1321
Updated: 2026-11-02

EUVDEUVD-2024-2911 8.8

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.

Record: EUVD-2024-2911
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P
Updated: 2026-11-02

GitHub AdvisoriesGHSA-34q8-jcq6-mc37 8.8

uPlot Prototype Pollution vulnerability

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.

Record: GHSA-34q8-jcq6-mc37
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Weakness: CWE-1321
Updated: 2026-11-02

NVD 7.8

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.

Record: CVE-2024-21489
CVSS 4.0: 7.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Weakness: CWE-1321
Updated: 2026-11-02

OSV 7.8

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.

Record: CVE-2024-21489
CVSS 4.0: 7.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P
Weakness: CWE-1321
Updated: 2026-11-02

OSVGHSA-34q8-jcq6-mc37 8.8

uPlot Prototype Pollution vulnerability

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.

Record: GHSA-34q8-jcq6-mc37
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Weakness: CWE-1321
Updated: 2026-11-02

OSVRHSA-2024:8083 8.2

Red Hat Security Advisory: grafana security update

Record: RHSA-2024:8083
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Updated: 2026-11-02

Affected products

leeoniya uplot

Affected packages

Affected packages
Package	Affected	Fixed
`uplot` npm	before 1.6.31	1.6.31
`grafana` Red Hat:rhel_aus:8.4::appstream	before 0:7.3.6-7.el8_4	0:7.3.6-7.el8_4
`grafana-debuginfo` Red Hat:rhel_aus:8.4::appstream	before 0:7.3.6-7.el8_4	0:7.3.6-7.el8_4
`grafana` Red Hat:rhel_e4s:8.4::appstream	before 0:7.3.6-7.el8_4	0:7.3.6-7.el8_4
`grafana-debuginfo` Red Hat:rhel_e4s:8.4::appstream	before 0:7.3.6-7.el8_4	0:7.3.6-7.el8_4
`grafana` Red Hat:rhel_tus:8.4::appstream	before 0:7.3.6-7.el8_4	0:7.3.6-7.el8_4
`grafana-debuginfo` Red Hat:rhel_tus:8.4::appstream	before 0:7.3.6-7.el8_4	0:7.3.6-7.el8_4

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-21489 is a high vulnerability (CVSS 8.8) in Leeoniya Uplot, published October 1, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. Fixed in uplot 1.6.31.

References

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