HIGH
libgrss through 0.7.0 fails to perform TLS certificate verification when downloading feeds, allowing remote attackers to manipulate the contents of feeds without detection
Published May 25, 2021
7.5
HIGHCVSS 3.1
EPSS 1.47%
Description
libgrss through 0.7.0 fails to perform TLS certificate verification when downloading feeds, allowing remote attackers to manipulate the contents of feeds without detection. This occurs because of the default behavior of SoupSessionSync.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.47% 0.01469
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01469
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.47% (0.01469) | 72.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.47% (0.01469) | 70.25th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.36% (0.00362) | 56.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.31% (0.00313) | 70.99th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.31% (0.00313) | 69.34th | v3 (v2023.03.01) |
| Dec 30, 2023 | 0.27% (0.00274) | 64.68th | v3 (v2023.03.01) |
| Dec 4, 2023 | 0.24% (0.00236) | 61.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.20% (0.00202) | 56.37th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
Weaknesses (1)
References (3)
- https://bugzilla.gnome.org/show_bug.cgi?id=772647 x_refsource_MISCIssue TrackingVendor Advisory
- https://gitlab.gnome.org/GNOME/libgrss/-/issues/4 x_refsource_MISCIssue TrackingVendor Advisory
- https://gitlab.gnome.org/GNOME/libgrss/-/merge_requests/7.patch x_refsource_MISCMailing ListPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.gnome.org/show_bug.cgi?id=772647 | x_refsource_MISCIssue TrackingVendor Advisory | |
| https://gitlab.gnome.org/GNOME/libgrss/-/issues/4 | x_refsource_MISCIssue TrackingVendor Advisory | |
| https://gitlab.gnome.org/GNOME/libgrss/-/merge_requests/7.patch | x_refsource_MISCMailing ListPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 25, 2021
Updated Aug 6, 2024
Reserved May 25, 2021
Link CVE-2016-20011
CISA Vulnrichment
Updated n/a