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Description

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A security flaw has been discovered in mixmark-io turndown up to 7.2.1. This affects an unknown function of the file src/commonmark-rules.js. Performing manipulation results in inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been released to the public and may be exploited.

Eine Schwachstelle wurde in mixmark-io turndown bis 7.2.1 gefunden. Hierbei betrifft es unbekannten Programmcode der Datei src/commonmark-rules.js. Mittels Manipulieren mit unbekannten Daten kann eine inefficient regular expression complexity-Schwachstelle ausgenutzt werden. Der Angriff lässt sich über das Netzwerk starten. Der Exploit steht zur öffentlichen Verfügung.

PUBLISHED Reserved 2025-08-29 | Published 2025-08-29 | Updated 2025-08-29 | Assigner VulDB




MEDIUM: 6.9CVSS: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
MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
5.0AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Inefficient Regular Expression Complexity

Resource Consumption

Product status

7.2.0
affected

7.2.1
affected

Timeline

2025-08-29:Advisory disclosed
2025-08-29:VulDB entry created
2025-08-29:VulDB entry last update

Credits

CrazzyHe (VulDB User) reporter

References

vuldb.com/?id.321880 (VDB-321880 | mixmark-io turndown commonmark-rules.js redos) vdb-entry

vuldb.com/?ctiid.321880 (VDB-321880 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.637911 (Submit #637911 | turndown npm v7.2.1 Inefficient Regular Expression Complexity) third-party-advisory

github.com/mixmark-io/turndown/issues/501 issue-tracking

github.com/mixmark-io/turndown/issues/501 exploit issue-tracking

cve.org (CVE-2025-9670)

nvd.nist.gov (CVE-2025-9670)

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