CVE-2018-13796

An issue was discovered in GNU Mailman before 2.1.28. A crafted URL can cause arbitrary text to be displayed on a web page from a trusted site.

Published: 2018-07-12 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-13796 is rated Moderate Risk (51.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.73%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-13796

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-29 0.48% 0.73% +0.25%
2 2025-11-21 0.33% 0.48% +0.15%
3 2025-11-18 — 0.33% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-13796

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-13796

GitHub Security Advisory for CVE-2018-13796

GHSA-xqvg-xm9m-p2c4 · Severity: medium · Ecosystem: pip — Moderate severity vulnerability that affects mailman

OS Trackers for CVE-2018-13796

vendor priority summary link
gentoo normal CVE-2018-13796: 1 GLSA(s) (201904-10), 1 atom(s) (net-mail/mailman); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-13796
redhat medium — https://access.redhat.com/security/cve/CVE-2018-13796
suse medium CVE-2018-13796 severity moderate: SUSE including 5 source package names (mailman-2.1.15-30.el7, mailman-2.1.15-9.6.6.1, mailman-2.1.17-3.3.3, mailman-2.1.17-3.8.1, mailman-2.1.29-lp150.2.8.1), 25 product×package rows across 25 product lines (SUSE Enterprise Storage 4, SUSE Liberty Linux 7, … (25 product lines)): Fixed 25. https://www.suse.com/security/cve/CVE-2018-13796/
ubuntu low CVE-2018-13796 low priority: Ubuntu including 1 source packages (mailman), 9 status rows across 9 suites (artful, bionic, cosmic, disco, eoan, focal, trusty, upstream, xenial): not-affected 3, released 3, ignored 2, DNE 1. https://ubuntu.com/security/CVE-2018-13796

Affected software / configurations for CVE-2018-13796

Vendor Product Version Raw CPE
gnu mailman < 2.1.28 cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*

References for CVE-2018-13796

cvelogic Threat Intelligence