CVE-2022-34749
Mistune vulnerable to catastrophic backtracking
8.6
HIGH
CVSS 3.1
EPSS 0.52%
Description
In mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.
How to fix CVE-2022-34749
To remediate CVE-2022-34749, upgrade the affected package to a fixed version below.
- Debian/mistune—no fix listed
- —upgrade to 2.0.3 or later
- —upgrade to a6d43215132fe4f3d93f8d7e90ba83b16a0838b2 or later
Is CVE-2022-34749 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0
- >= 2.0.0a1, < 2.0.3
- from 0, < a6d43215132fe4f3d93f8d7e90ba83b16a0838b2 | >= 2.0.0a1, < 2.0.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |