CVE-2026-73055

Summary

Shescape before 2.1.15 (and 3.0.0 before 3.0.2) fails to properly escape tilde (~) characters in assignment contexts on Unix systems where the shell is explicitly configured to "sh" or true and /bin/sh points to BusyBox. Using the escape and escapeAll APIs with untrusted input in an assignment prefixed to a command, an attacker can inject a tilde payload to disclose the user's home directory location and, depending on usage, alter the location on which a command operates.

Affected Software

VendorProductVersion RangeStatus
ericcornelissenshescape0 < 2.1.15affected
ericcornelissenshescape3.0.0 < 3.0.2affected

Weaknesses

  • CWE-116: Improper Encoding or Escaping of Output
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References