CVE-2020-8031 json
obs: Stored XSS
published 2021-02-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-28943
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
A Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Open Build Service allows remote attackers to store JS code in markdown that is not properly escaped, impacting confidentiality and integrity. This issue affects: Open Build Service versions prior to 2.10.8.
Patch / fix
- openSUSE Open Build Service 2.10.8
- open-build-service Debian 12 2.9.4-4
debian advisories DEBIAN-CVE-2020-8031
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1178880 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- openSUSE Open Build Service
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
bugzilla.suse.com
/show_bug.cgi?id=1178880
exploit, issue-tracking, vendor-advisory
Sources
- CVE List CVE-2020-8031
- NVD CVE-2020-8031
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.