CVE-2020-1946Apache SpamAssassin has an OS Command Injection vulnerability
- 9.8CriticalCVSS base score
- 5.9%Exploitation in 30 daysEPSS · top 6.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In Apache SpamAssassin before 3.4.5, malicious rule configuration (.cf) files can be configured to run system commands without any output or errors. With this, exploits can be injected in a number of scenarios. In addition to upgrading to SA version 3.4.5, users should only use update channels or 3rd party .cf files from trusted places.
Timeline
ID reserved
By apache
- 16 months later
· 16 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 5.9% · top 6.7% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Apache Software Foundation · Apache SpamAssassin
- affected Apache SpamAssassin – < 3.4.5
References
References7
- https://s.apache.org/3r1wh (opens in a new tab)x_refsource_MISCx_transferred
- DSA-4879 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- FEDORA-2021-bf06dcffa8 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [debian-lts-announce] 20210401 [SECURITY] [DLA 2615-1] spamassassin security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2021-90e915cc4f (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2021-5a4377797c (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- GLSA-202105-26 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-12752 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-1946)Record last updated .