CVE-2026-42615

CVSS 7.2 HIGHEPSS 0.3%CWE-79

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.2EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

29 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.

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

Affected products

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References