CVE-2026-81707CWE-20

CVE-2026-81707

Critical · published August 27, 2026

CVSS v3.1

9.8

EPSS

Percentile

47.3

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 9.8 · CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0: 9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS: 0.00587 · 47.3th percentile
Weakness: CWE-20 · Improper Input Validation
Published: 2026-08-27T21:21Z

References (2)

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-qjr2-x6mr-8xgf · [email protected]https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-ansi-escape-injection-via-identity-email · [email protected]

EPSS history

Timeline

27 AUG 14:51Z
openssl_encrypt before 1.4.9 ANSI Escape Injection via Identity Email
cvelistv5