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Debian Security Advisory DSA-4545-1                   security@debian.org
https://www.debian.org/security/                       Moritz Muehlenhoff
October 18, 2019                      https://www.debian.org/security/faq
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Package        : mediawiki
CVE ID         : CVE-2019-16738

It was discovered that the Special:Redirect functionality of MediaWiki,
a website engine for collaborative work, could expose suppressed user
names, resulting in an information leak.

For the oldstable distribution (stretch), this problem has been fixed
in version 1:1.27.7-1~deb9u2.

For the stable distribution (buster), this problem has been fixed in
version 1:1.31.4-1~deb10u1.

We recommend that you upgrade your mediawiki packages.

For the detailed security status of mediawiki please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/mediawiki

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org