CVE-2021-47157

9.8 criticalEPSS 0.4%

Critical (9.8). EPSS 0.4% chance of exploitation in the next 30 days.

The Kossy module before 0.60 for Perl allows JSON hijacking because of X-Requested-With mishandling.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-31)
CWE: CWE-346
Published: 2024-03-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19