An issue was discovered in the jsrsasign package before 8.0.17 for Node.js.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-119 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | jsrsasign (npm) | 3.0.0 to before 8.0.17 | 8.0.17 | Patch available | GHSA-q3gh-5r98-j4h3 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- jsrsasign (npm) Vendor— Affected 3.0.0 to before 8.0.17 Fixed in 8.0.17 Patch available GHSA-q3gh-5r98-j4h3
Remediation
- Fix · GHSA-q3gh-5r98-j4h3 jsrsasign (npm) Fixed in 8.0.17 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-14968
- 2026-10-03 Alias added: GHSA-q3gh-5r98-j4h3
References
Advisory 6
Other 8
- https://github.com/kjur/jsrsasign/security/advisories/GHSA-q3gh-5r98-j4h3
- https://github.com/kjur/jsrsasign/commit/3bcc088c727658d7235854cd2a409a904cc2ce99
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14968
- https://github.com/kjur/jsrsasign
- https://kjur.github.io/jsrsasign
- https://kjur.github.io/jsrsasign/api/symbols/RSAKey.html#.verifyWithMessageHashPSS
- https://security.netapp.com/advisory/ntap-20200724-0001
- https://www.npmjs.com/advisories/1541
Sources
- CVE-2020-14968 · CVE Program
- CVE-2020-14968 · NVD
- FIRST EPSS
- GHSA-q3gh-5r98-j4h3 · GitHub Advisory Database · CC BY 4.0
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