CVE-2021-39360

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 libzapojit through 0.0.3, zpj-skydrive.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 Libzapojit: through 0.0.3

References

https://blogs.gnome.org/mcatanzaro/2021/05/25/reminder-soupsessionsync-and-soupsessionasync-default-to-no-tls-certificate-verification/
https://gitlab.gnome.org/GNOME/libzapojit/-/issues/4
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDXCHOCVP3VSAKDBQSLER2DQHFIOUHAT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNSIMQXP6VQWJXI7VW7ZCLCS4NWW465T/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UG7TUICJM4QJHI4QJ2RHOSQE2QWD3KO3/
https://blogs.gnome.org/mcatanzaro/2021/05/25/reminder-soupsessionsync-and-soupsessionasync-default-to-no-tls-certificate-verification/
https://gitlab.gnome.org/GNOME/libzapojit/-/issues/4
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDXCHOCVP3VSAKDBQSLER2DQHFIOUHAT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNSIMQXP6VQWJXI7VW7ZCLCS4NWW465T/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UG7TUICJM4QJHI4QJ2RHOSQE2QWD3KO3/

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