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.

CVE-2023-28531

CVE-2023-28531CRITICAL

n/a n/a — ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0299   87.1     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Mar 17  Reserved by mitre
  Mar 17  Published (CNA: mitre)
  Oct 14  ENRICHED — CVE-2023-28531. Received CVSS 9.8 and CPE data from NVD.

CWE-284 · CNA: mitre · CVSS v3.1 · 9 references · NVD status: Modified

Description

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 17, 2023	Reserved	Reserved by mitre
March 17, 2023	Published	Published (CNA: mitre)
October 14, 2026	ENRICHED	ENRICHED — CVE-2023-28531. Received CVSS 9.8 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-284

References (9)

Authoritative record: CVE-2023-28531 at cve.org

Weaknesses: CWE-284

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-28531 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.