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TI-2021-03390 Aliases CVE-2021-20087GHSA-xg68-chx2-253g

Prototype pollution in jquery-deparam

Priority MEDIUM 42CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-deparam 0.5.1 allows a malicious user to inject properties into Object.prototype.

Why it matters now

EPSS 0.02072 81st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—jquery-deparam0.5.1—No fix listedCNA
—jquery-deparam (npm)up to 0.5.3—No fix listedGHSA-xg68-chx2-253g
  • jquery-deparam Vendor— Affected 0.5.1 Fixed in — No fix listed CNA
  • jquery-deparam (npm) Vendor— Affected up to 0.5.3 Fixed in — No fix listed GHSA-xg68-chx2-253g

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:acemetrix:jquery-deparam:0.5.1:*:*:*:*:*:*:*0.5.1VulnerableAcemetrix
  • cpe:2.3:a:acemetrix:jquery-deparam:0.5.1:*:*:*:*:*:*:* Versions 0.5.1 Vulnerable ·Acemetrix

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20087
  2. 2026-10-03 Alias added: GHSA-xg68-chx2-253g

References

Exploit 1

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences