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No exploitation reportedFix available

CVE-2019-9155

No exploitation reported by the sources we read.

  • Published2019-08-22
  • Fixed in4.3.0
  • WeaknessCWE-327

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 cryptographic issue in OpenPGP.js <=4.2.0 allows an attacker who is able provide forged messages and gain feedback about whether decryption of these messages succeeded to conduct an invalid curve attack in order to gain the victim's ECDH private key.

Timeline

dates in UTC
  1. 2019-08-2216:15CVE publishedNVD

Versions per branch

OSV · NVD
openpgp
BranchAffectedFixed in
4.3< 4.3.04.3.0
Openpgpjs
BranchAffectedFixed in
4.2≤ 4.2.0no fix published

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

Fix

  1. Update openpgp to 4.3.0

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 3.05.9read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • NVDweakness (CWE)CWE-327read 2026-10-23
  • FIRST EPSSEPSS score1.7 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2019-08-23

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2019-08-22
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-77jf-fjjf-xcww

Frequently asked questions

What is CVE-2019-9155?

A cryptographic issue in OpenPGP.js <=4.2.0 allows an attacker who is able provide forged messages and gain feedback about whether decryption of these messages succeeded to conduct an invalid curve attack in order to gain the victim's ECDH private key.

Is CVE-2019-9155 actively exploited?

Active exploitation of CVE-2019-9155 has not been confirmed. Its EPSS score was 1.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-9155?

CVE-2019-9155 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

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