CVE-2019-9155

Name: CVE-2019-9155
Creator: NVD / NIST
Published: 2019-08-22T16:15:10.54+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.48%

Last modified Jun 17, 2026

CVE-2019-9155 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-327

Affected Software

Vendor	Product	Versions
Openpgpjs	Openpgpjs	<= 4.2.0

References

http://packetstormsecurity.com/files/154191/OpenPGP.js-4.2.0-Signature-Bypass-Invalid-Curve-Attack.htmlThird Party Advisory, VDB Entry
https://github.com/openpgpjs/openpgpjs/pull/853Third Party Advisory
https://github.com/openpgpjs/openpgpjs/pull/853/commits/7ba4f8c655e7fd7706e8d7334e44b40fdf56c43ePatch, Third Party Advisory
https://github.com/openpgpjs/openpgpjs/releases/tag/v4.3.0Release Notes
https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-openpgp-js/Exploit, Third Party Advisory
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.html#download=1Third Party Advisory
http://packetstormsecurity.com/files/154191/OpenPGP.js-4.2.0-Signature-Bypass-Invalid-Curve-Attack.htmlThird Party Advisory, VDB Entry
https://github.com/openpgpjs/openpgpjs/pull/853Third Party Advisory
https://github.com/openpgpjs/openpgpjs/pull/853/commits/7ba4f8c655e7fd7706e8d7334e44b40fdf56c43ePatch, Third Party Advisory
https://github.com/openpgpjs/openpgpjs/releases/tag/v4.3.0Release Notes
https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-openpgp-js/Exploit, Third Party Advisory
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.html#download=1Third Party Advisory

Timeline

Published: Aug 22, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9155?

How severe is CVE-2019-9155?

Severity scoring for CVE-2019-9155 is pending analysis. The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9155?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-9155?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST