CVE-2021-39358

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-22 · updated 2026-06-17
Weakness: CWE-295

Description

In GNOME libgfbgraph through 0.2.4, gfbgraph-photo.c does not enable TLS certificate verification on the SoupSessionSync objects it creates, leaving users vulnerable to network MITM attacks. NOTE: this is similar to CVE-2016-20011.

Affected products

Fedoraproject Fedora: 33, 34, 35
GNOME Libgfbgraph: through 0.2.4

References

https://blogs.gnome.org/mcatanzaro/2021/05/25/reminder-soupsessionsync-and-soupsessionasync-default-to-no-tls-certificate-verification/
https://gitlab.gnome.org/GNOME/libgfbgraph/-/issues/17
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GRCVZUNPTNFQQQCEZVP7RYY6OKHPDBC5/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYI47UX6S5PAOWVWQ2KID64MCTXTH7SE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXXAF56BYLSES4UCLXKFCODZXTNAZ2G6/
https://blogs.gnome.org/mcatanzaro/2021/05/25/reminder-soupsessionsync-and-soupsessionasync-default-to-no-tls-certificate-verification/
https://gitlab.gnome.org/GNOME/libgfbgraph/-/issues/17
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GRCVZUNPTNFQQQCEZVP7RYY6OKHPDBC5/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYI47UX6S5PAOWVWQ2KID64MCTXTH7SE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXXAF56BYLSES4UCLXKFCODZXTNAZ2G6/

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