Information Exposure Through an Error Message in python-cryptography - CVE-2026-69247
Published: August 1, 2026
Vulnerability identifier: #VU140695
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-69247
CWE-ID: CWE-209
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to recover plaintext from PKCS#7 EnvelopedData messages.
The vulnerability exists due to generation of error message containing sensitive information and observable timing discrepancy in pkcs7_decrypt_der, pkcs7_decrypt_pem, and pkcs7_decrypt_smime when decrypting attacker-supplied EnvelopedData. A remote attacker can send crafted EnvelopedData messages and observe distinguishable errors and timing differences to recover plaintext from PKCS#7 EnvelopedData messages.
Exploitation requires a service that automatically decrypts untrusted EnvelopedData for the victim certificate and returns adaptive responses at high volume.
Affected software
python-cryptography
Communications Unified Assurance
Maximo Application Suite - Edge Data Collector
QRadar App SDK
Ubuntu
Fedora
IBM Security SOAR
python-cryptography-doc (Ubuntu package)
python3-cryptography (Ubuntu package)
python-pynitrokey
pyOpenSSL
python-cryptography
Communications Unified Assurance
Maximo Application Suite - Edge Data Collector
QRadar App SDK
Ubuntu
Fedora
IBM Security SOAR
python-cryptography-doc (Ubuntu package)
python3-cryptography (Ubuntu package)
python-pynitrokey
pyOpenSSL
python-cryptography
How to mitigate CVE-2026-69247
Install security update from vendor's website.
python-cryptography - update to 50.0.0
Maximo Application Suite - Edge Data Collector - addressed in versions 9.0.25, 9.1.15, 9.2.4
IBM Security SOAR - update to 51.0.11.0
python-cryptography-doc (Ubuntu package) - update to 46.0.5-1ubuntu2.2
python3-cryptography (Ubuntu package) - update to 46.0.5-1ubuntu2.2
python-pynitrokey - update to 0.12.3-4.fc44
pyOpenSSL - update to 26.4.0-2.fc44
python-cryptography - update to 50.0.0-1.fc44
QRadar App SDK - update to 2.2.7
Maximo Application Suite - Edge Data Collector - addressed in versions 9.0.25, 9.1.15, 9.2.4
IBM Security SOAR - update to 51.0.11.0
python-cryptography-doc (Ubuntu package) - update to 46.0.5-1ubuntu2.2
python3-cryptography (Ubuntu package) - update to 46.0.5-1ubuntu2.2
python-pynitrokey - update to 0.12.3-4.fc44
pyOpenSSL - update to 26.4.0-2.fc44
python-cryptography - update to 50.0.0-1.fc44
QRadar App SDK - update to 2.2.7
External References
Related Security Bulletins
- Information Exposure Through an Error Message in python-cryptography
- Fedora 44 update for pyOpenSSL, python-cryptography, python-pynitrokey
- Multiple vulnerabilities in IBM Security SOAR
- Multiple vulnerabilities in IBM QRadar App SDK
- Multiple vulnerabilities in IBM Edge Data Collector
- Ubuntu update for python-cryptography
- Multiple vulnerabilities in Communications Unified Assurance