CVE-2026-27171

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Source
https://cve.org/CVERecord?id=CVE-2026-27171
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-27171.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-27171
Downstream
Related
Published
2026-02-18T02:36:19.509Z
Modified
2026-07-11T03:55:59.639218035Z
Severity
  • 2.9 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

Database specific 
{
    "cna_assigner": "mitre",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27171.json",
    "cwe_ids": [
        "CWE-1284"
    ]
}
References

Affected packages

Git / github.com/madler/zlib

Affected ranges

Type
GIT
Repo
https://github.com/madler/zlib
Events
Introduced
21767c654d31d2dccdde4330529775c6c5fd5389
Fixed
da607da739fa6047df13e66a2af6b8bec7c2a498
Database specific 
{
    "cpe": "cpe:2.3:a:zlib:zlib:*:*:*:*:*:*:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.3.2"
        },
        {
            "introduced": "1.2.12"
        }
    ]
}

Affected versions

v1.*
v1.2.12
v1.2.13
v1.3
v1.3.1
v1.3.1.2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-27171.json"