VDB
ALPINE-CVE-2026-27171
ALPINE-CVE-2026-27171
PUBLISHED
CVSS 5.5 MEDIUM
Record from OSV · Published February 18, 2026
zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| zlib | Alpine:v3.23 | 1.3.2-r0 |
| zlib | Alpine:v3.24 | 1.3.2-r0 |
| zlib | Alpine:v3.20 | 1.3.2-r0 |
| zlib | Alpine:v3.22 | 1.3.2-r0 |
| zlib | Alpine:v3.21 | 1.3.2-r0 |
Risk scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.23 | zlib | 1.2.12, 1.2.7-r0, 1.2.11-r3 |
| Alpine:v3.24 | zlib | 1.2.12 |
| Alpine:v3.20 | zlib | 1.3-r0, 0, 1.2.10-r0 |
| Alpine:v3.22 | zlib | 1.2.12, 1.2.10-r0, 1.2.11-r0 |
| Alpine:v3.21 | zlib | 1.2.11-r2, 1.2.12, 1.3.1-r0 |
Timeline
- Feb 18, 2026 CVE Published
- Jul 8, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch
Query this with the API
The same record, from the CLI:
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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
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