What’s Vulnerable › Vulnerabilities

CVE-2019-9153

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-08-22 · updated 2026-06-17
• Weakness: CWE-347

Description

Improper Verification of a Cryptographic Signature in OpenPGP.js <=4.1.2 allows an attacker to forge signed messages by replacing its signatures with a "standalone" or "timestamp" signature.

Affected products

• openpgpjs: through 4.1.2

References

• http://packetstormsecurity.com/files/154191/OpenPGP.js-4.2.0-Signature-Bypass-Invalid-Curve-Attack.html
• https://github.com/openpgpjs/openpgpjs/pull/797/commits/327d3e5392a6f59a4270569d200c7f7a2bfc4cbc
• https://github.com/openpgpjs/openpgpjs/pull/816
• https://github.com/openpgpjs/openpgpjs/releases/tag/v4.2.0
• 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/797/commits/327d3e5392a6f59a4270569d200c7f7a2bfc4cbc
• https://github.com/openpgpjs/openpgpjs/pull/816
• https://github.com/openpgpjs/openpgpjs/releases/tag/v4.2.0
• 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

Get alerted when CVE-2019-9153 or the next vulnerability affects your stack