OpenPGP.js Vulnerability: When Signature Spoofing Became a Comedy of Errors

OpenPGP.js developers have patched a critical vulnerability allowing attackers to spoof message signature verification. With just one valid signature and plaintext, attackers can make fake messages appear legit. Versions 5 and 6 are affected, but fear not—updates are here to save the day.

3P
Published: May 21, 2025 7:20 amAdded: May 21, 2025 at 12:36 amAssembled by: The Editor
Pro Dashboard

Hot Take:

Well, folks, looks like the OpenPGP.js team had a case of “signature envy” – so much so that anyone could slap a fake signature on their message and get away with it. Thankfully, they’ve patched it up before it turned into a full-blown forgery fiesta. Remember, if it sounds too good to be truly encrypted, it probably is.

Key Points:

  • OpenPGP.js has patched a critical vulnerability that allowed message signature spoofing.
  • The vulnerability was discovered by researchers at Codean Labs.
  • The flaw affected OpenPGP.js versions 5 and 6.
  • New versions, 5.11.3 and 6.1.1, have been released to fix the issue.
  • The vulnerability is tracked as CVE-2025-47934.

Membership Required

 You must be a member to access this content.

View Membership Levels
Already a member? Log in here
The Nimble Nerd
powered by the NSA, er,  GDPR Cookie Compliance
Confessional Booth of Our Digital Sins

Okay, deep breath, let's get this over with. In the grand act of digital self-sabotage, we've littered this site with cookies. Yep, we did that. Why? So your highness can have a 'premium' experience or whatever. These traitorous cookies hide in your browser, eagerly waiting to welcome you back like a guilty dog that's just chewed your favorite shoe. And, if that's not enough, they also tattle on which parts of our sad little corner of the web you obsess over. Feels dirty, doesn't it?