CVE-2020-12137

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 81.7% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-04-24 12:37Z6 YR AGO

Last updated

2024-08-04 11:48Z2 YR AGO

Reserved

2020-04-24

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

6662125464f30b940a735530bab28c722682d1b8e1f1f87b4b5a44ee5a222a14

• www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/02/24/2x_refsource_MISC
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/02/24/3x_refsource_MISC
• bazaar.launchpad.nethttp://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWSx_refsource_MISC
• www.openwall.com[oss-security] 20200424 Re: mailman 2.x: XSS via file attachments in list archiveshttp://www.openwall.com/lists/oss-security/2020/04/24/3mailing-listx_refsource_MLIST
• www.debian.orgDSA-4664https://www.debian.org/security/2020/dsa-4664vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20200503 [SECURITY] [DLA 2200-1] mailman security updatehttps://lists.debian.org/debian-lts-announce/2020/05/msg00002.htmlmailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-4348-1https://usn.ubuntu.com/4348-1/vendor-advisoryx_refsource_UBUNTU
• lists.fedoraproject.orgFEDORA-2020-69f2f1d987https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2020-20b748e81ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YCMGTTOXXCVM4O6CYZLTZDX6YLYORNF/vendor-advisoryx_refsource_FEDORA
• lists.opensuse.orgopenSUSE-SU-2020:1707http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2020:1752http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.htmlvendor-advisoryx_refsource_SUSE