In GNOME libgfbgraph through 0.2.4, gfbgraph-photo.c does not enable TLS certificate verification on the SoupSessionSync objects it creates…

published 2021-08-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25719

cvss: 5.9; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

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.

Patch / fix

distros 4

red hat suse almalinux rocky linux

gfbgraph RHEL 8 0.2.4-1.el8

red hat advisories RHSA-2022:1801

gfbgraph SLE Workstation Extension 15 SP3, SLE Module for Package Hub 15 SP3, openSUSE Leap 15.3 0.2.3-150000.3.5.1

suse advisories SUSE-SU-2022:2876-1

gfbgraph AlmaLinux 8 0.2.4-1.el8

almalinux advisories ALSA-2022:1801

gfbgraph Rocky Linux 8 0.2.4-1.el8

rocky linux advisories RLSA-2022:1801

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-39358 updated 2025-11-21 cvss 7.5

gfbgraph: missing TLS certificate verification

Red Hat Enterprise Linux AppStream (v. 8) gfbgraph 0.2.4-1.el8
fixed: vendor fix RHSA-2022:1801

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-295 Improper Certificate Validation

References

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

Sources

CVE List CVE-2021-39358
NVD CVE-2021-39358

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary