Bump github.com/microcosm-cc/bluemonday from 1.0.4 to 1.0.15

[dependabot]

Bumps github.com/microcosm-cc/bluemonday from 1.0.4 to 1.0.15.

Release notes

Sourced from github.com/microcosm-cc/bluemonday's releases.

Fix XSS vulnerability in HTML attribute parsing

A well crafted HTML attribute had the potential to evade sanitization due to incorrect escaping of the attribute whilst serializing it.

This version resolves that issue. In doing so it will also correctly use & to separate query string values in URLs within HTML attributes (href, src, ...).

Add SanitizeReaderToWriter(r io.Reader, w io.Writer)

No release notes provided.

Policies that accept regexps for matching are now additive

Thanks to @​KN4CK3R for the contribution of a PR that results in multiple Matching() policies on the same attr and element no longer clobber the previous regexps.

Improve data-uri base64 handling, and improve docs structure

No release notes provided.

Improve support for links on all elements

Originally I had only concentrated the link validation on the elements that were safe to link. However people do want to allow some unsafe elements and yet still have the benefits of link validation and sanitization, i.e. allow iframe but still have the src safely validated... these changes allow that.

Additionally I have added tests showing how AllowSchemesWithCustomPolicy can be used to globally allow only links to certain domains, and a test that shows how to apply the AllowAttributes().Matching().OnElements to only allow a given domain on specific elements (i.e. only allow an iframe if is is a YouTube embed).

AllowComments

Adds a new func to allow HTML comments to be allowed. But does not allow CDATA comments which will be treated as plain HTML comments.

Also updates the readme, and the versions of the dependencies that have also updated.

Update x/net to latest version

As per https://nvd.nist.gov/vuln/detail/CVE-2020-28852

Restore support for go < 1.10

No release notes provided.

Support query args without values

URIs that are /page?query are now accepted and not removed.

CORS support and minor cleanup

A merging of a few older PRs the most notable being the addition of CORS support with elements that support crossorigin tags.

Fix regression that permitted script tags to be injected

#111 revealed that we had experienced a regression of an earlier fix and that <script> tags could be injected by relying on the use of the uppercase Cyrillic i, as when Go lowercases this it would map the UTF-8 rune to an ASCII rune. The fix prevents this by retaining the ASCII escaping.

Commits

• f0057e2 Fix escaping of HTML attributes
• c0a6f20 Spelling mistakes and whitespace are OK
• 5117f95 Allow the last commit to work on old go versions
• 9eef462 Merge pull request #110 from zeripath/sanitize-to-writer
• 7f2aa2d Merge pull request #125 from KN4CK3R/additive-policies
• eb9cddd Merge branch 'master' of https://github.com/microcosm-cc/bluemonday into addi...
• 0310fe1 Added additive policies.
• 75e91cc Merge pull request #124 from microcosm-cc/buro9/reorg
• 7107ed5 Minor re-org to improve documentation readability
• 548985b Merge pull request #123 from KN4CK3R/whitespace
• Additional commits viewable in compare view

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[dependabot]

Superseded by #57.