[Snyk] Fix for 12 vulnerabilities

[liangyuanruo]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `pip` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • requirements.txt

⚠️ Warning

WebError 0.13.1 requires WebOb, which is not installed.
repoze.who 2.3 requires WebOb, which is not installed.
repoze.who-friendlyform 1.0.8 requires WebOb, which is not installed.
Pylons 0.9.7 requires WebOb, which is not installed.
Pylons 0.9.7 requires WebTest, which is not installed.
Pylons 0.9.7 requires FormEncode, which is not installed.
fanstatic 0.12 requires WebOb, which is not installed.

Vulnerabilities that will be fixed

By pinning:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	589/1000 Why? Has a fix available, CVSS 7.5	Improper Input Validation SNYK-PYTHON-FLASK-42185	flask: 0.11.1 -> 0.12.3	No	No Known Exploit
	589/1000 Why? Has a fix available, CVSS 7.5	Denial of Service (DoS) SNYK-PYTHON-FLASK-451637	flask: 0.11.1 -> 0.12.3	No	No Known Exploit
	586/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-PYTHON-JINJA2-1012994	jinja2: 2.8 -> 2.11.3	No	Proof of Concept
	514/1000 Why? Has a fix available, CVSS 6	Sandbox Escape SNYK-PYTHON-JINJA2-174126	jinja2: 2.8 -> 2.11.3	No	No Known Exploit
	644/1000 Why? Has a fix available, CVSS 8.6	Sandbox Bypass SNYK-PYTHON-JINJA2-455616	jinja2: 2.8 -> 2.11.3	No	No Known Exploit
	696/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 7.5	Regular Expression Denial of Service (ReDoS) SNYK-PYTHON-PYGMENTS-1086606	pygments: 2.1.3 -> 2.7.4	No	Proof of Concept
	589/1000 Why? Has a fix available, CVSS 7.5	Denial of Service (DoS) SNYK-PYTHON-PYGMENTS-1088505	pygments: 2.1.3 -> 2.7.4	No	No Known Exploit
	604/1000 Why? Has a fix available, CVSS 7.8	SQL Injection SNYK-PYTHON-SQLALCHEMY-173678	sqlalchemy: 0.9.6 -> 1.2.18	No	No Known Exploit
	539/1000 Why? Has a fix available, CVSS 6.5	Cross-site Scripting (XSS) SNYK-PYTHON-WERKZEUG-40482	werkzeug: 0.11.10 -> 0.15.3	No	No Known Exploit
	519/1000 Why? Has a fix available, CVSS 6.1	Cross-site Scripting (XSS) SNYK-PYTHON-WERKZEUG-42069	werkzeug: 0.11.10 -> 0.15.3	No	No Known Exploit
	669/1000 Why? Has a fix available, CVSS 9.1	Insufficient Randomness SNYK-PYTHON-WERKZEUG-458931	werkzeug: 0.11.10 -> 0.15.3	No	No Known Exploit
	370/1000 Why? Has a fix available, CVSS 2.9	Insufficient Randomness SNYK-PYTHON-WERKZEUG-564338	werkzeug: 0.11.10 -> 0.15.3	No	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the effected dependencies could be upgraded.

Check the changes in this PR to ensure they won't cause issues with your project.

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🦉 SQL Injection
🦉 Cross-site Scripting (XSS)
🦉 Cross-site Scripting (XSS)