CVE-2020-5239 json
Unspecified vulnerability in the fetchmail script in Mailu
published 2020-02-13 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-26458
- cvss
- 8.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
In Mailu before version 1.7, an authenticated user can exploit a vulnerability in Mailu fetchmail script and gain full access to a Mailu instance. Mailu servers that have open registration or untrusted users are most impacted. The master and 1.7 branches are patched on our git repository. All Docker images published on docker.io/mailu for tags 1.5, 1.6, 1.7 and master are patched. For detailed instructions about patching and securing the server afterwards, see https://github.com/Mailu/Mailu/issues/1354
Patch / fix
- mailu mailu 1.7
Exploit prediction
0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Mailu Mailu
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/Mailu/Mailu/security/advisories/GHSA-2467-p5gv-58q6
mitigation, third-party-advisory
-
github.com
/Mailu/Mailu/issues/1354
third-party-advisory
Sources
- CVE List CVE-2020-5239
- NVD CVE-2020-5239
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