CVE-2026-81702 openssl_encrypt before 1.4.9 Key Substitution via Identity Load

Critical 9.3 Published 27 Aug 2026 Updated 1 Oct 2026

Attackers can substitute public keys in identity stores, bypassing signature verification and enabling silent decryption of data using attacker-controlled keys.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-81702?

CVE-2026-81702 is a critical vulnerability in Jahlives Openssl Encrypt, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

openssl_encrypt before 1.4.9 fails to re-derive and validate fingerprints when loading identities from identity.json, allowing attackers to substitute public keys in identity stores. Attackers can replace legitimate public keys with their own while maintaining the claimed fingerprint, enabling silent key substitution where encryption uses attacker keys and signature verification appears valid.

Weakness: CWE-345

Which versions are affected by CVE-2026-81702?

1 open source package ship an affected version, including openssl-encrypt. It affects 1 product.

Package	Affected	Fixed in
`openssl-encrypt` PyPI	All versions	`1.4.9`

Products include Jahlives Openssl Encrypt.

How do I fix CVE-2026-81702?

Upgrade openssl-encrypt to 1.4.9 or later.

Is CVE-2026-81702 being exploited?

There is no known exploitation of CVE-2026-81702 in the wild and no public exploit code.

All Jahlives Openssl Encrypt vulnerabilities

Sources

Also known as GHSA-m2gh-w3fj-x92v, GHSA-q8p3-7h6h-ghfr, PYSEC-2026-3962.