cve.bz

CVE-2021-43570

9.8 criticalEPSS 1.0%

Critical (9.8) in starkbank ecdsa-java. EPSS 1.0% chance of exploitation in the next 30 days. Fixed in com.starkbank.ellipticcurve:starkbank-ecdsa 1.0.1.

The verify function in the Stark Bank Java ECDSA library (ecdsa-java) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
CWE
CWE-347
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-r28h-x6hv-2fq3Mavencom.starkbank.ellipticcurve:starkbank-ecdsa<1.0.11.0.1

References

Check your stackJSON