Commonmark
Vendor:
First CVE: Dec 30, 2018 · Active for 7 years
4
Total CVEs
More Total CVEs than 72% of tracked products
1.3
Avg CVEs / Year
Higher CVE frequency than 55% of tracked products
6.1
Avg CVSS
Higher Avg CVSS than 21% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Commonmark over time
Volume of CVEsAvg CVSS Base Score
First CVE
Dec 30, 2018
7 years ago
Most Recent CVE
Mar 24, 2026
122 days ago
CVE Severity & Scoring
Commonmark4 CVEs
100%
All CVEs352,231 CVEs
45%
40%
11%
Medium
Attack Vector
Local0 (0.0%)
Network4 (100.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low4 (100.0%)
High0 (0.0%)
Unknown0 (0.0%)
User Interaction
None0 (0.0%)
Unknown0 (0.0%)
Required4 (100.0%)
Privileges Required
Low0 (0.0%)
High0 (0.0%)
None4 (100.0%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (4 CVEs).
4 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-30838MEDIUM league/commonmark is a PHP Markdown parser. Prior to version 2.8.1, the DisallowedRawHtml extension can be bypassed by inserting a newline, tab, or other ASCII whitespace character | Mar 7, 2026 | 6.1 | 22 | NO | NO |
CVE-2018-20583MEDIUM Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML ( | Dec 30, 2018 | 6.1 | 22 | NO | NO |
CVE-2019-10010MEDIUM Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library before 0.18.3 allows remote attackers to insert unsafe links into HTML by using double-encoded HTML en | Mar 24, 2019 | 6.1 | 21 | NO | NO |
CVE-2026-33347MEDIUM league/commonmark is a PHP Markdown parser. From version 2.3.0 to before version 2.8.2, the DomainFilteringAdapter in the Embed extension is vulnerable to an allowlist bypass due t | Mar 24, 2026 | 6.1 | 19 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (4 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (4 CVEs).
Media Mentions
Signals from CVEs in this product scope (4 CVEs).
Top CNAs Publishing CVEs For Commonmark
Top CWEs
Versions
No cataloged versions.