CVE-2026-74877: openssl-encrypt has no owner verification on key revocation , any client can revoke any key

CVE-2026-74877 · Severity: high · CVSS 8.8 · Published 2026-08-17

openssl_encrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revoke_key method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership restriction.

Technologies: Jahlives Openssl Encrypt, openssl-encrypt (PyPI). Vendors: Jahlives, PyPI.

Quick answers

Is CVE-2026-74877 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-74877 being exploited in the wild.
How severe is CVE-2026-74877?
High severity, with a CVSS score of 8.8, published 17 August 2026.
Which products and versions are affected?
openssl-encrypt (PyPI) ECOSYSTEM:introduced=0,fixed=1.4.0.
Is there a fix for CVE-2026-74877?
Yes. openssl-encrypt (PyPI): upgrade to 1.4.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-74877?
Check whether you run Jahlives Openssl Encrypt or openssl-encrypt (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • openssl-encrypt (PyPI): upgrade to 1.4.0 or later
    pip install "openssl-encrypt>=1.4.0"

Affected products

  • Jahlives Openssl Encrypt
  • openssl-encrypt (PyPI) ECOSYSTEM:introduced=0,fixed=1.4.0

Identifiers

  • CVE-2026-74877
  • GHSA-hvc7-763r-4f3h
  • PYSEC-2026-3743

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