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No exploitation reportedFix available

CVE-2019-14859

No exploitation reported by the sources we read.

  • Published2020-01-02
  • WeaknessCWE-347

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2020-01-0215:15CVE publishedNVD

Versions per branch

NVD · OSV
Redhat openstack
BranchAffectedFixed in
10.x= 10no fix published
13.x= 13no fix published
14.x= 14no fix published
15.x= 15no fix published
Redhat ceph storage
BranchAffectedFixed in
2.0= 2.0no fix published
3.0= 3.0no fix published
Python-ecdsa project python-ecdsa
BranchAffectedFixed in
0.13< 0.13.30.13.3

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • candlepinRed Hat:satellite:6.10::el7all versions · fixed in 0:4.0.9-1.el7sat
  • foremanRed Hat:satellite:6.10::el7all versions · fixed in 0:2.5.2.17-2.el7sat
  • foremanRed Hat:satellite_capsule:6.10::el7all versions · fixed in 0:2.5.2.17-2.el7sat
  • py3-ecdsaCleanStartall versions · fixed in 0.13.3-r0and 1 other package
  • py3-ecdsaAlpine:v3.24all versions · fixed in 0.13.3-r0
  • py3-ecdsaAlpine:v3.23all versions · fixed in 0.13.3-r0
  • py3-ecdsaAlpine:v3.22all versions · fixed in 0.13.3-r0
  • py3-ecdsaAlpine:v3.21all versions · fixed in 0.13.3-r0

56 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-14859 Red Hat Product Security4 products fixed · 7 known affected

    python-ecdsa: DER encoding is not being verified in signatures

    python-ecdsa.src as a component of Red Hat Ceph Storage 2 · python-ecdsa.src as a component of Red Hat OpenStack Platform 10 (Newton) · python-ecdsa.src as a component of Red Hat OpenStack Platform 13 (Queens) · +4 more

  • RHSA-2021:4702 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Satellite 6.10 Release

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2021:4702 · 4 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  2. No fix available, says the vendor Red Hat Product Security CVE-2019-14859 · 1 productFix deferred
  3. No fix planned, says the vendor Red Hat Product Security CVE-2019-14859 · 6 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19.1read 2026-10-23
  • CNACVSS 3.07.4known since 2026-10-23
  • NVDCVSS 2.06.4read 2026-10-23
  • CNAweakness (CWE)CWE-347known since 2026-10-23
  • NVDweakness (CWE)CWE-347read 2026-10-23
  • FIRST EPSSEPSS score1.5 %2026-11-10
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryCRITICAL2020-04-01

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
2020-01-02
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8qxj-f9rh-9fg2

Frequently asked questions

What is CVE-2019-14859?

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.

Is CVE-2019-14859 actively exploited?

Active exploitation of CVE-2019-14859 has not been confirmed. Its EPSS score was 1.5% on 2026-11-10, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-14859?

CVE-2019-14859 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

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