CVE catalog

CVE-2019-14859

python-ecdsa: CVE-2019-14859

Severity: High · CVSS 7.4CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published: Oct 14, 2019, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.53% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	python-ecdsa	sid	`0.19.2-2`	fixed
Debian	python-ecdsa	forky	`0.19.2-2`	fixed
Debian	python-ecdsa	trixie	`0.19.1-1+deb13u1`	fixed
Debian	python-ecdsa	bookworm	`0.18.0-3`	fixed
Ubuntu	python-ecdsa	16.04	`0.13-2`	vulnerable
Ubuntu	python-ecdsa	16.04	`0.13-2ubuntu0.16.04.1`	fixed
Ubuntu	python-ecdsa	18.04	`0.13-2`	vulnerable
Ubuntu	python-ecdsa	18.04	`0.13-2ubuntu0.18.04.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	python-ecdsa	source	sid	`0.13.3-1`	not yet assigned	Not reported	Not reported
Debian	python-ecdsa	source	forky	`0.13.3-1`	not yet assigned	Not reported	Not reported
Debian	python-ecdsa	source	trixie	`0.13.3-1`	not yet assigned	Not reported	Not reported
Debian	python-ecdsa	source	bookworm	`0.13.3-1`	not yet assigned	Not reported	Not reported
Ubuntu	python-ecdsa	deb	16.04	`0.13-2ubuntu0.16.04.1`	Not reported	UBUNTU-CVE-2019-14859	Not reported
Ubuntu	python-ecdsa	deb	18.04	`0.13-2ubuntu0.18.04.1`	Not reported	UBUNTU-CVE-2019-14859	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[python3-ecdsa]Fixed
Source package: [python-ecdsa]
Details (2)
- 0.18.0-3 · all · bookworm
  Fixed · Fixed: 0.13.3-1
  dsa · python-ecdsa · debian · bookworm; dsa · python-ecdsa · debian · 12
- 0.18.0-3 · all · bookworm
  Fixed · Fixed: 0.13.3-1
  dsa · python-ecdsa · debian · bookworm; dsa · python-ecdsa · debian · 12

[Debian 13 (Trixie)]

[python3-ecdsa]Fixed
Source package: [python-ecdsa]
Details (2)
- 0.19.1-1 · all · trixie
  Fixed · Fixed: 0.13.3-1
  dsa · python-ecdsa · debian · 13
- 0.19.1-1 · all · trixie
  Fixed · Fixed: 0.13.3-1
  dsa · python-ecdsa · debian · 13

Observed: Oct 23, 2026, 5:40:25 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]