Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N N A N N N 5.1 .0020 10.2 —
AFFECTED Product Versions Fixed DOMPurify unspecified 3.4.0
TIMELINE Jul 23 EXPLOIT PUBLISHED — CVE-2026-65903 (cure53 DOMPurify). Public exploit reference added. Jul 23 Reserved by VulnCheck Jul 23 Published (CNA: VulnCheck)
DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.
| Date | Event | Detail |
|---|---|---|
| July 23, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-65903 (cure53 DOMPurify). Public exploit reference added. |
| July 23, 2026 | Reserved | Reserved by VulnCheck |
| July 23, 2026 | Published | Published (CNA: VulnCheck) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| cure53 | DOMPurify | — | — | 3.4.0 |
Authoritative record: CVE-2026-65903 at cve.org
Vendors: cure53
Weaknesses: CWE-697
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-65903 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 Wednesday, August 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.