What’s Vulnerable › Vulnerabilities

CVE-2019-9155

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-08-22 · updated 2026-06-17
• Weakness: CWE-327

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.

Affected products

• openpgpjs: through 4.2.0

References

• http://packetstormsecurity.com/files/154191/OpenPGP.js-4.2.0-Signature-Bypass-Invalid-Curve-Attack.html
• https://github.com/openpgpjs/openpgpjs/pull/853
• https://github.com/openpgpjs/openpgpjs/pull/853/commits/7ba4f8c655e7fd7706e8d7334e44b40fdf56c43e
• https://github.com/openpgpjs/openpgpjs/releases/tag/v4.3.0
• https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-openpgp-js/
• https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.html#download=1
• http://packetstormsecurity.com/files/154191/OpenPGP.js-4.2.0-Signature-Bypass-Invalid-Curve-Attack.html
• https://github.com/openpgpjs/openpgpjs/pull/853
• https://github.com/openpgpjs/openpgpjs/pull/853/commits/7ba4f8c655e7fd7706e8d7334e44b40fdf56c43e
• https://github.com/openpgpjs/openpgpjs/releases/tag/v4.3.0
• https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-openpgp-js/
• https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.html#download=1

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