CVE-2026-22184
High · 7.8CVSS
7.8
EPSS
0.4%
Published
Jan 7, 2026
CISA due date
—
The record
zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not affect the core zlib compression library. The flaw occurs when a user executes the untgz command with an excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-size global buffer.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Chainguard | minizip | 0 | 0 |
| Chainguard | zlib | 0 | 0 |
| Mageia:9 | zlib | 0 | 1.2.13-1.3.mga9 |
| Wolfi | minizip | 0 | 0 |
| Wolfi | zlib | 0 | 0 |
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