Signature Spoofing Vulnerability in OpenPGP.js JavaScript Library
CVE-2025-47934

8.7HIGH

Key Information:

Vendor

Openpgpjs

Status
Openpgpjs
Vendor
CVE Published:
19 May 2025

What is CVE-2025-47934?

A vulnerability exists in OpenPGP.js versions through 5.11.2 and 6.1.0 where a specially crafted message can be used to bypass signature verifications. This allows an attacker to forge the validity of non-detached signed messages by returning false data while still signaling a valid signature. Version 5.11.3 and 6.1.1 include patches to mitigate this issue. It is recommended to implement workarounds, such as separate verification processes for signatures.

Affected Version(s)

openpgpjs >= 5.0.1, < 5.11.3 < 5.0.1, 5.11.3

openpgpjs >= 6.0.0-alpha.0, < 6.1.1 < 6.0.0-alpha.0, 6.1.1

References

https://github.com/openpgpjs/openpgpjs/security/advisorie...
x_refsource_CONFIRM
https://github.com/openpgpjs/openpgpjs/commit/43f5f4e2bd6...
x_refsource_MISC
https://github.com/openpgpjs/openpgpjs/commit/bd54e8535ca...
x_refsource_MISC

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-47934 : Signature Spoofing Vulnerability in OpenPGP.js JavaScript Library