A lynx security update has been released for Debian GNU/Linux 10 to address an issue which can lead to leaking of credential in clear text in SNI data.

DSA 4953-1: lynx security update

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Debian Security Advisory DSA-4953-1 security@debian.org
  https://www.debian.org/security/ Salvatore Bonaccorso
August 10, 2021   https://www.debian.org/security/faq
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Package : lynx
CVE ID : CVE-2021-38165
Debian Bug : 991971

Thorsten Glaser and Axel Beckert reported that lynx, a non-graphical
(text-mode) web browser, does not properly handle the userinfo
subcomponent of a URI, which can lead to leaking of credential in
cleartext in SNI data.

For the stable distribution (buster), this problem has been fixed in
version 2.8.9rel.1-3+deb10u1.

We recommend that you upgrade your lynx packages.

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

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/