Language: Java
Label: vulnerable
CWE: CWE-918 \u2014 Server-Side Request Forgery (SSRF)
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Code:
	public UImage toUImage(ColorMapper colorMapper, HColor backcolor, HColor forecolor) {
		final BufferedImage im = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

		if (backcolor == null) {
			backcolor = HColors.WHITE;
		}
		if (forecolor == null) {
			forecolor = HColors.BLACK;
		}
		final HColorGradient gradient = HColors.gradient(backcolor, forecolor, '\0');
		for (int col = 0; col < width; col++) {
			for (int line = 0; line < height; line++) {
				final int localColor = color[line][col];
				if (localColor == -1) {
					final double coef = 1.0 * gray[line][col] / (16 - 1);
					final Color c = gradient.getColor(colorMapper, coef, 255);
					im.setRGB(col, line, c.getRGB());
				} else {
					im.setRGB(col, line, localColor);
				}
			}
		}
		return new UImage(new PixelImage(im, AffineTransformType.TYPE_BILINEAR));
	}