cve.bz

CVE-2021-26813

7.5 highEPSS 2.3%

High (7.5). EPSS 2.3% chance of exploitation in the next 30 days. Fixed in markdown2 2.4.0.

markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
2.3% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)
CWE
CWE-1333
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-jr9p-r423-9m2rPyPImarkdown2>=1.0.1.18 <2.4.02.4.0
PYSEC-2021-20PyPImarkdown2>=1.0.1.18 <2.4.02.4.0

References

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