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.
n/a jsrsasign — Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-par…
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N H N N N H H N 8.1 .0022 13.4 —
AFFECTED
Product Versions Fixed
jsrsasign unspecified —
org.webjars.npm:jsrsasign unspecified —
TIMELINE
Mar 22 Reserved by snyk
Mar 23 Published (CNA: snyk)
Aug 17 EXPLOIT PUBLISHED — CVE-2026-4600 (jsrsasign). Public exploit reference added.
Aug 17 RESCORED — CVE-2026-4600 (jsrsasign). CVSS 9.1 → 8.1 (NVD).
Description
Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-parameter validation in KJUR.crypto.DSA.setPublic (and the related DSA/X509 verification flow in src/dsa-2.0.js). An attacker can forge DSA signatures or X.509 certificates that X509.verifySignature() accepts by supplying malicious domain parameters such as g=1, y=1, and a fixed r=1, which make the verification equation true for any hash.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| March 22, 2026 | Reserved | Reserved by snyk |
| March 23, 2026 | Published | Published (CNA: snyk) |
| August 17, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-4600 (jsrsasign). Public exploit reference added. |
| August 17, 2026 | RESCORED | RESCORED — CVE-2026-4600 (jsrsasign). CVSS 9.1 → 8.1 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| n/a | jsrsasign | — | — | — |
| n/a | org.webjars.npm:jsrsasign | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-4600 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.