CVE-2016-15059 (GCVE-0-2016-15059)

Vulnerability from cvelistv5 – Published: 2026-09-22 07:18 – Updated: 2026-09-22 17:07
VLAI
Title
Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode
Summary
Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode. The XS backend builds the encoded label in the string buffer of the scalar it returns, sized from the input length. The loop that emits the digits of each code point checks for room before every write, but the write of the last digit of each round and the write of the terminating NUL do not, so an input whose encoded form fills the buffer writes past its end. Only the XS backend is affected. Encoding an attacker-supplied string corrupts the heap.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 15:25 UTC
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 61/100 over 359 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Affected: 0 , < 2.301 (custom)
Show details on NVD website
To clipboard 

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