CVE-2019-14859
Without proper verification, an attacker could use a malleable signature to create false transactions.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 1.53% probability · 75th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- python-ecdsa project/python-ecdsa · redhat/ceph storage · redhat/openstack · redhat/virtualization
- Source
- secalert@redhat.com
EPSS 1.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/warner/python-ecdsa/issues/114Exploit, Third Party Advisory
- https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3Release Notes, Third Party Advisory
- https://pypi.org/project/ecdsa/0.13.3/Release Notes, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/warner/python-ecdsa/issues/114Exploit, Third Party Advisory
- https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3Release Notes, Third Party Advisory
- https://pypi.org/project/ecdsa/0.13.3/Release Notes, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.