CVE•Published 2020-06-22•Modified 2026-06-22•1 article on news•6 live references•NVD data
CVE-2020-14968Kjur · Jsrsasign
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
85
Exploit Prediction Scoring System · top 15% of all CVEs
Description
An issue was discovered in the jsrsasign package before 8.0.17 for Node.js. Its RSASSA-PSS (RSA-PSS) implementation does not detect signature manipulation/modification by prepending '\0' bytes to a signature (it accepts these modified signatures as valid). An attacker can abuse this behavior in an application by creating multiple valid signatures where only one signature should exist. Also, an attacker might prepend these bytes with the goal of triggering memory corruption issues.
Timeline
Published 2020-06-22
Modified 2026-06-22
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2020-14968Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Kjur Jsrsasign"All exposed Kjur Jsrsasign instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Jsrsasign"HTTP body or banner mentions "Jsrsasign" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2020-14968Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-14968Censys host search filtered to this CVE id.
grep.app
CVE-2020-14968Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-14968GitHub code search for direct mentions.
Google dork
"CVE-2020-14968" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.