[mistune] Cross-site Scripting in Mistune

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

References

• https://nvd.nist.gov/vuln/detail/CVE-2017-15612
• https://github.com/lepture/mistune/pull/140
• https://github.com/advisories/GHSA-hpv5-v8g5-c864
• https://github.com/pypa/advisory-database/tree/main/vulns/mistune/PYSEC-2017-80.yaml