9.1

CVE-2021-30246: kjur jsrsasign

CVSS: 9.1v3.1CriticalModified
AliasesGHSA-27fj-mc8w-j9wg
Published 07-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-30246 is a critical (CVSS 9.1) vulnerability in kjur jsrsasign. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
0.96%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

In the jsrsasign package through 10.1.13 for Node.js, some invalid RSA PKCS#1 v1.5 signatures are mistakenly recognized to be valid. NOTE: there is no known practical attack.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.96% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Kjur1 product
Npm1 product
  • jsrsasign< 10.2.0

2 vendors · 2 products

References

6 links