GHSA-h4hv-92pp-pcjg

Suggest an improvement
Source
https://github.com/advisories/GHSA-h4hv-92pp-pcjg
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-h4hv-92pp-pcjg/GHSA-h4hv-92pp-pcjg.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-h4hv-92pp-pcjg
Aliases
Published
2026-04-29T06:33:30Z
Modified
2026-05-06T22:26:25Z
Severity
  • 7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
CyberChef has a Cross-site Scripting issue
Details

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

Database specific 
{
    "cwe_ids": [
        "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-06T22:09:27Z",
    "nvd_published_at": "2026-04-29T04:16:41Z",
    "severity": "HIGH"
}
References

Affected packages

npm / cyberchef

Package

Name
cyberchef
View open source insights on deps.dev
Purl
pkg:npm/cyberchef

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
11.0.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-h4hv-92pp-pcjg/GHSA-h4hv-92pp-pcjg.json"