CVE-2019-9149

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

Mailvelope prior to 3.3.0 allows private key operations without user interaction via its client-API. By modifying an URL parameter in Mailvelope, an attacker is able to sign (and encrypt) arbitrary messages with Mailvelope, assuming the private key password is cached. A second vulnerability allows an attacker to decrypt an arbitrary message when the GnuPG backend is used in Mailvelope.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-347 CWE-863

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/mailvelope/mailvelope/blob/master/Changelog.md#v330Release Notes, Third Party Advisory
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.htmlThird Party Advisory
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.pdf?__blob=publicationFile&v=3Exploit, Third Party Advisory
https://github.com/mailvelope/mailvelope/blob/master/Changelog.md#v330Release Notes, Third Party Advisory
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.htmlThird Party Advisory
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.pdf?__blob=publicationFile&v=3Exploit, Third Party Advisory

Timeline

Published: Jul 9, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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