CVE-2020-19002 json
Mezzanine Cross Site Scripting (XSS) vulnerability
published 5y ago modified 4mo ago also GHSA-fpv7-hx6r-9vcx , PYSEC-2021-343 , EUVD-2021-0134
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
Cross Site Scripting (XSS) in Mezzanine v4.3.1 allows remote attackers to execute arbitrary code via the 'Description' field of the component 'admin/blog/blogpost/add/'. This issue is different than CVE-2018-16632.
Is CVE-2020-19002 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/stephenmcd/mezzanine/issues/1921 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | mezzanine | <=6.0.0 all versions |
no fix listed |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/stephenmcd/mezzanine/issues/1921
web, exploit, issue-tracking, third-party-advisory, report
-
nvd.nist.gov
/vuln/detail/CVE-2020-19002
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/mezzanine/PYSEC-2021-343.yaml
web
-
github.com
/stephenmcd/mezzanine
package
-
github.com
/stephenmcd/mezzanine/blob/v6.0.0/mezzanine/blog/templates/blog/blog_post_list.html#L112
web
-
github.com
/advisories/GHSA-fpv7-hx6r-9vcx
advisory
Sources
- CVE List CVE-2020-19002
- GitHub Advisory GHSA-fpv7-hx6r-9vcx
- NVD CVE-2020-19002
- OSV PYSEC-2021-343
Fencer Intel 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.