Vulnerability · Published Feb 22, 2023 · Assigned by canonical
CVE-2023-26303markdown-it-py crash on null assertions
Low 3.3
In plain English
A low-severity security flaw in markdown-it-py from Executable Books. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.2%top 86.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | markdown-it-py | 2.1.0-5 | DEBIAN-CVE-2023-26303 |
| Debian:13 | markdown-it-py | 2.1.0-5 | DEBIAN-CVE-2023-26303 |
| Debian:14 | markdown-it-py | 2.1.0-5 | DEBIAN-CVE-2023-26303 |
| PyPI | markdown-it-py | 2.2.0 | GHSA-vrjv-mxr7-vjf8 |
| PyPI | markdown-it-py | 2.2.0 | PYSEC-2023-24 |
| Ubuntu:22.04:LTS | markdown-it-py | no fix listed | UBUNTU-CVE-2023-26303 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Executable Books | markdown-it-py | 0 – before v2.2.0 |
Weakness: CWE-173 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L