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CVE-2020-11888

17
FAUCET Score

CVE-2020-11888 is a cross-site scripting (XSS) vulnerability affecting python-markdown2 versions through 2.3.8, stemming from mishandling of element names that do not match the expected word character pattern. This medium-severity vulnerability (CVSS 6.1) can be exploited remotely with low attack complexity, requiring user interaction, and could lead to limited confidentiality and integrity impacts. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion, indicating a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.8CPE matchmatch criteria
cpe:2.3:a:python-markdown2_project:python-markdown2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.88%
Probability of exploitation in next 30 days
EPSS Percentile
77.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0188 is in the 89th percentile among its peer group of 26,221 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: markdown2Fixed in: 2.3.9

Vendor Advisories (1)

pipGHSA-fv3h-8x5j-pvgqmedium

XSS in python-markdown2

Apr 22, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-05/msg00031.html
lists.opensuse.org / opensuse-security-announce/2020-05/msg00035.html
github.com / trentm/python-markdown2/issues/348
ExploitThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6XOAIRJJCZNJUALXDHSIGH5PS2H63A3J
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/AQLRBGRVRRZK7P5SFL2MNGXFX37YHJAV
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/PN6QSHRFZXRQAYZJQ4MOW5MKIXBYOMED