CVE-2026-81707 openssl_encrypt before 1.4.9 ANSI Escape Injection via Identity Email
Attackers can inject ANSI escape sequences into identity emails to forge fingerprint verification lines, bypassing out-of-band verification in openssl_encrypt.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81707?
CVE-2026-81707 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 sanitize the email field of imported identity documents, allowing attackers to inject ANSI escape sequences that forge the fingerprint verification line displayed to users. Attackers can deliver a crafted identity bundle through normal contact-exchange flows or keyserver responses to manipulate terminal output and display a fraudulent fingerprint, bypassing the out-of-band verification mechanism that protects against key substitution attacks.
Weakness: CWE-20
Which versions are affected by CVE-2026-81707?
How do I fix CVE-2026-81707?
No fix has been published for CVE-2026-81707 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-81707 being exploited?
There is no known exploitation of CVE-2026-81707 in the wild and no public exploit code.
Sources
Also known as GHSA-fhj3-wp77-vmvw, GHSA-qjr2-x6mr-8xgf.