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CVE-2019-9154

19
FAUCET Score

CVE-2019-9154 describes an Improper Verification of a Cryptographic Signature vulnerability in OpenPGP.js versions up to and including 4.1.2, allowing an attacker to present unsigned data as legitimately signed. This high-severity vulnerability (CVSS 7.5) is network-exploitable with low attack complexity and no user interaction required, leading to a high impact on integrity. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1.2CPE matchmatch criteria
cpe:2.3:a:openpgpjs:openpgpjs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 56th percentile among its peer group of 51,455 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: openpgpFixed in: 4.2.0

Vendor Advisories (1)

npmGHSA-hfmf-q43v-2ffjhigh

Improper Key Verification in openpgp

Aug 23, 2019

References

packetstormsecurity.com / files/154191/OpenPGP.js-4.2.0-Signature-Bypass-Invalid-Curve-Attack.html
Third Party AdvisoryVDB Entry
github.com / openpgpjs/openpgpjs/pull/797
Third Party Advisory
github.com / openpgpjs/openpgpjs/pull/797/commits/47138eed61473e13ee8f05931119d3e10542c5e1
PatchThird Party Advisory
github.com / openpgpjs/openpgpjs/releases/tag/v4.2.0
Release Notes
sec-consult.com / en/blog/advisories/multiple-vulnerabilities-in-openpgp-js
ExploitThird Party Advisory
bsi.bund.de / SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.html
Third Party Advisory