CVE-2026-48959

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Source
https://cve.org/CVERecord?id=CVE-2026-48959
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-48959.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-48959
Downstream
Published
2026-05-27T02:29:07.027Z
Modified
2026-05-31T03:55:50.103821948Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward
Details

IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward.

fastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration.

Extracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip->new($zip, Name => $target) drives a per-byte read loop scaling with the entry's compressed size, up to the non-Zip64 4 GiB cap.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48959.json",
    "cna_assigner": "CPANSec",
    "cwe_ids": [
        "CWE-407"
    ]
}
References

Affected packages

Git / github.com/pmqs/io-compress

Affected ranges

Type
GIT
Repo
https://github.com/pmqs/io-compress
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f1979570091697409f4792e5d401bbf8fb4b20b6

Affected versions

Other
v2-205
v2.*
v2.000_00
v2.000_02
v2.000_03
v2.000_04
v2.000_05
v2.000_06
v2.000_07
v2.000_09
v2.000_10
v2.000_11
v2.000_12
v2.000_13
v2.000_14
v2.001
v2.002
v2.003
v2.004
v2.005
v2.006
v2.007
v2.008
v2.010
v2.011
v2.012
v2.014
v2.015
v2.017
v2.018
v2.019
v2.020
v2.021
v2.022
v2.023
v2.024
v2.025
v2.026
v2.027
v2.030
v2.032
v2.033
v2.034
v2.035
v2.036
v2.037
v2.039
v2.040
v2.042
v2.043
v2.044
v2.045
v2.046
v2.047
v2.048
v2.049
v2.052
v2.055
v2.057
v2.058
v2.059
v2.060
v2.061
v2.062
v2.063
v2.064
v2.066
v2.067
v2.068
v2.069
v2.070
v2.072
v2.073
v2.074
v2.080
v2.081
v2.082
v2.083
v2.084
v2.086
v2.087
v2.088
v2.089
v2.090
v2.091
v2.092
v2.093
v2.095
v2.096
v2.100
v2.101
v2.102
v2.103
v2.105
v2.106
v2.201
v2.204
v2.206
v2.207
v2.208
v2.211
v2.212
v2.213
v2.214
v2.215
v2.216
v2.217
v2.218
v2.219

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-48959.json"