CVE-2026-2327

5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Summary

[none]

Details

Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.

References

Affected packages

Git / github.com/markdown-it/markdown-it

Affected ranges

Type: GIT
Repo: https://github.com/markdown-it/markdown-it
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

4b4bbcae5e0990a5b172378e507b33a59012ed26

Affected versions

10.*

10.0.0

11.*

11.0.0

11.0.1

12.*

12.0.0

12.0.1

12.0.2

12.0.3

12.0.4

12.0.5

12.0.6

12.1.0

12.2.0

12.3.0

12.3.1

12.3.2

13.*

13.0.0

13.0.1

13.0.2

14.*

14.0.0

14.1.0

2.*

2.0.0

2.1.0

2.1.1

2.1.2

2.1.3

2.2.0

2.2.1

3.*

3.0.0

3.0.1

3.0.2

3.0.3

3.0.4

3.0.5

3.0.6

3.0.7

3.1.0

4.*

4.0.0

4.0.1

4.0.2

4.0.3

4.1.0

4.1.1

4.1.2

4.2.0

4.2.1

4.2.2

4.3.0

4.3.1

4.4.0

5.*

5.0.0

5.0.1

5.0.2

5.0.3

5.1.0

6.*

6.0.0

6.0.1

6.0.2

6.0.3

6.0.4

6.0.5

6.1.0

6.1.1

7.*

7.0.0

7.0.1

8.*

8.0.0

8.0.1

8.1.0

8.2.0

8.2.1

8.2.2

8.3.0

8.3.1

8.3.2

8.4.0

8.4.1

8.4.2

9.*

9.0.0

9.0.1

9.1.0

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-2327.json"