What is CVE-2021-29996?

CVE-2021-29996 is a critical-severity vulnerability in Marktext, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2021-04-05.

How severe is CVE-2021-29996?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2021-29996 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Marktext

CVE-2021-29996

Mark Text through 0.16.3 allows attackers arbitrary command execution. This could lead to Remote Code Execution (RCE) by opening .md files containing a mutation Cross Site Scripting (XSS) payload.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.028 (84.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Marktext
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-29996?: CVE-2021-29996 is a critical-severity vulnerability in Marktext, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2021-04-05.
How severe is CVE-2021-29996?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2021-29996 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.