Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N H L R C H H N 7.7 .0402 90.5 —
AFFECTED Product Versions Fixed dojo < 1.12.8 – —
TIMELINE Jan 2 Reserved by GitHub_M Mar 10 Published (CNA: GitHub_M) Oct 8 EXPLOIT PUBLISHED — CVE-2020-5258 (dojo). Public exploit reference added.
In affected versions of dojo (NPM package), the deepCopy method is vulnerable to Prototype Pollution. Prototype Pollution refers to the ability to inject properties into existing JavaScript language construct prototypes, such as objects. An attacker manipulates these attributes to overwrite, or pollute, a JavaScript application object prototype of the base object by injecting other values. This has been patched in versions 1.12.8, 1.13.7, 1.14.6, 1.15.3 and 1.16.2
| Date | Event | Detail |
|---|---|---|
| January 2, 2020 | Reserved | Reserved by GitHub_M |
| March 10, 2020 | Published | Published (CNA: GitHub_M) |
| October 8, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2020-5258 (dojo). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| dojo | dojo | — | < 1.12.8 | — |
Authoritative record: CVE-2020-5258 at cve.org
Vendors: dojo
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-5258 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
