DavidBuchanan314/ambiguous-png-packer
Craft PNG files that appear completely different in Apple software [NOW PATCHED] observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 1721
- days_rel: n/a
- days_push: 1640
- n_releases_24m: 0
Adoption not part of the score
1059 stars · 32 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A Python tool that crafts PNG files rendering differently in Apple software versus other viewers, exploiting a parsing ambiguity in Apple's image decoders. The underlying Apple bug has since been patched.
Use cases
- craft a png that looks different on safari vs chrome
- research image parser discrepancies across platforms
- demonstrate apple png decoding exploit
- create ambiguous images for security presentations
- test how different renderers decode the same png
When to choose
- studying historical image-parsing vulnerabilities on Apple platforms
- demonstrating decoder inconsistency in security research or talks
When to avoid
- you need a working exploit today - the Apple bug is patched
- production image processing or general PNG encoding
Facets
cli-tool · maturity maintenance
image-processing security parser security image-processing reverse-engineering python cli cross-platform png exploit apple image-differential cve-research
1 source
- readme: https://github.com/DavidBuchanan314/ambiguous-png-packer · fetched 2026-08-28 · 7f9f9fef3250
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| DavidBuchanan314/ambiguous-png-packer | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="DavidBuchanan314/ambiguous-png-packer")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem