CVE-2020-8021 json
unauthorized read access to files where sourceaccess is disabled via a crafted _service file in Open Build Service
published 2020-05-19 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-28934
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.
Patch / fix
- openSUSE Open Build Service 2.10.5
- open-build-service Debian 12 2.9.4-4
debian advisories DEBIAN-CVE-2020-8021
Exploit prediction
1.30% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1171649 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- openSUSE Open Build Service
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
bugzilla.suse.com
/show_bug.cgi?id=1171649
exploit, issue-tracking, patch, vendor-advisory
-
lists.debian.org
/debian-lts-announce/2021/02/msg00006.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-8021
- NVD CVE-2020-8021
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.