CVE-2021-39358

CVE-2021-39358 is a medium-severity vulnerability in Gnome Libgfbgraph with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

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.

Frequently asked questions

What is CVE-2021-39358?
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.
How severe is CVE-2021-39358?
CVE-2021-39358 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-39358 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39358?
CVE-2021-39358 primarily affects Gnome Libgfbgraph. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-39358?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-39358 published?
CVE-2021-39358 was published on 2021-08-22 and last updated on 2026-06-17.

References

Affected products (4)

Other CWE-295 (Improper Certificate Validation) vulnerabilities

Browse all CWE-295 (Improper Certificate Validation) vulnerabilities →