{"cve":"CVE-2020-14968","nvd":{"published":"2020-06-22T12:15:10.227","modified":"2026-06-22T03:18:31.867","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-119"],"references":["https://github.com/kjur/jsrsasign/issues/438","https://github.com/kjur/jsrsasign/releases/tag/8.0.17","https://github.com/kjur/jsrsasign/releases/tag/8.0.18","https://kjur.github.io/jsrsasign/","https://security.netapp.com/advisory/ntap-20200724-0001/"],"products":["kjur:jsrsasign","netapp:max_data"],"source":"nvd","synced_at":"2026-10-19T21:05:42.039641217+00:00"},"epss":{"cve":"CVE-2020-14968","score":0.02863,"percentile":0.86766,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q3gh-5r98-j4h3","url":"https://osv.dev/vulnerability/GHSA-q3gh-5r98-j4h3","summary":"RSA-PSS signature validation vulnerability by prepending zeros in jsrsasign","modified":"2023-11-08T04:02:28.196189Z","packages":[{"ecosystem":"npm","name":"jsrsasign","purl":"pkg:npm/jsrsasign","ranges":[">=3.0.0 <8.0.17"],"fixed":["8.0.17"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}