Vulnerability library
Security checkMay 06, 2026

CyberChef has a Cross-site Scripting issue

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High severitynpmcyberchef

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Description

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

Recommendation

Update the cyberchef package to the latest compatible version. Followings are version details:

  • Affected version(s): < 11.0.0
  • Patched version(s): 11.0.0

References

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See something that needs correcting? Let us knowUpdated May 06, 2026