Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

gchq/cyberchef

              master @ 9f87fec
            

Fixes

CVEs

HIGH

Peak severity

42.9%

Coverage

Highlights

Reflected XSS: 10 prior fixes. Scrutinize any change in this area.

src/core/operations/TranslateDateTimeFormat.mjs: most-fixed (3 issues). Treat as high-risk during review.

3 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

Reflected XSS: Inadequate output escaping when constructing tables of brute-forced text encodings allowed execution of arbitrary client-side scripts. This risk is highlighted by CVE-2019-15532.

Denial of Service: Numeric input parameters such as byte length and width lacked positive integer constraints, leading to infinite loops and massive memory resource exhaustion.

Reflected XSS: Translating dates into custom HTML output structures allowed injection of arbitrary scripts, requiring structural changes to enforce plain-text string representation or strict library-based escaping.