CVE-2026-17591
LOW
CVSS 3.6
Published: 2026-10-16
Modified: 2026-10-17
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Description
A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.
Quick Facts
| CVE ID | CVE-2026-17591 |
| CVSS Score | 3.6 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |