CVE-2022-34749

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.07%
Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/lepture/mistune/releases third party advisory release notes
https://github.com/lepture/mistune/commit/a6d43215132fe4f3d93f8d7e90ba83b16a0838b2 third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TQHXITQ2DSBYOILKHXBSBB7PFBPZHF63/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-34749?
CVE-2022-34749 has been scored as a high severity vulnerability.
How to fix CVE-2022-34749?
To fix CVE-2022-34749, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-34749 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-34749 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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