CVE-2026-115906
Description
A flaw was found in the zip crate. An attacker can bypass cryptographic authentication and cause applications to accept modified data by supplying a crafted encrypted archive. Because the AES (Advanced Encryption Standard) reader fails to verify the authentication tag when an encrypted entry is empty or prematurely truncated, applications process tampered contents without reporting an authentication failure.
Statement
This vulnerability is rated as Moderate impact by Red Hat Product Security because exploitation requires user interaction or an automated workflow to process an untrusted archive, and the issue is restricted to specific decryption routines for password-protected AES entries. Standard archive extraction workflows that do not consume password-protected AES-encrypted entries are unaffected. Furthermore, successful exploitation compromises data integrity without directly enabling remote code execution or disclosing confidential cryptographic keys.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | N/A | 6.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | High | N/A | High |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Understanding the Weakness (CWE)
Integrity,Other
Technical Impact: Modify Application Data; Other
Integrity checks usually use a secret key that helps authenticate the data origin. Skipping integrity checking generally opens up the possibility that new data from an invalid source can be injected.
Integrity,Other
Technical Impact: Other
Data that is parsed and used may be corrupted.
Non-Repudiation,Other
Technical Impact: Hide Activities; Other
Without a checksum check, it is impossible to determine if any changes have been made to the data after it was sent.
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