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CVE-2019-9153

20
FAUCET Score

CVE-2019-9153 is a high-severity vulnerability affecting OpenPGP.js versions up to 4.1.2, allowing an attacker to forge signed messages by substituting legitimate signatures with "standalone" or "timestamp" signatures. With a CVSS score of 7.5, this vulnerability is easily exploitable over the network without user interaction, leading to high integrity impact. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage 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
2.01%
Probability of exploitation in next 30 days
EPSS Percentile
78.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0201 is in the 63rd percentile among its peer group of 51,485 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-qwqc-28w3-fww6high

Message Signature Bypass 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/commits/327d3e5392a6f59a4270569d200c7f7a2bfc4cbc
PatchThird Party Advisory
github.com / openpgpjs/openpgpjs/pull/816
Third 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