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CVE-2021-39359

21
FAUCET Score

CVE-2021-39359 is a medium-severity vulnerability affecting GNOME libgda versions up to 6.0.0, including Fedora distributions. It stems from the libgda component's failure to enable TLS certificate verification on SoupSessionSync objects, making users susceptible to Man-in-the-Middle (MITM) attacks. The vulnerability has a CVSS score of 5.9, indicating a network attack vector with high attack complexity, but it only impacts confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.0.0CPE matchmatch criteria
cpe:2.3:a:gnome:libgda:*:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 24th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blogs.gnome.org / mcatanzaro/2021/05/25/reminder-soupsessionsync-and-soupsessionasync-default-to-no-tls-certificate-verification
Vendor Advisory
github.com / GNOME/libgda/commit/bd7b9568bcd9f6d3e6680bb04323a670c842a62d
gitlab.gnome.org / GNOME/libgda/-/issues/249
Issue TrackingVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HRPPP47WRCAPAEJGRMEKYYJZBQCYXTLQ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/WLMVVIJNY5NMOT3FH36RFBWOTPVW7GME