CVE-2026-4833

A weakness has been identified in Orc discount up to 3.0.1.2. This issue affects the function compile of the file markdown.c of the component Markdown Handler. This manipulation causes uncontrolled recursion. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project maintainer confirms: "[I]f you feed it an infinitely deep blockquote input it will crash. (...) [T]his is a duplicate of an old bug that I've been working on."

CVSS v3 3.3 LOW
CVSS v2.0 1.7 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

1.7^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 3.1 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/Orc/discount/
https://github.com/Orc/discount/issues/305
https://github.com/Orc/discount/issues/305#issuecomment-4027546673
https://github.com/user-attachments/files/25847391/crash00.md
https://vuldb.com/?ctiid.353138
https://vuldb.com/?id.353138
https://vuldb.com/?submit.775841

Configurations

No configuration.

History

30 Mar 2026, 13:26

Type	Values Removed	Values Added
Summary		(es) Se ha identificado una debilidad en Orc discount hasta 3.0.1.2. Este problema afecta a la función compile del archivo markdown.c del componente Markdown Gestor. Esta manipulación causa recursión incontrolada. El ataque está restringido a ejecución local. El exploit ha sido puesto a disposición del público y podría ser utilizado para ataques. El mantenedor del proyecto confirma: 'si le proporcionas una entrada de blockquote infinitamente profunda, se bloqueará. (...) esto es un duplicado de un error antiguo en el que he estado trabajando.'

26 Mar 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-26 02:16

Updated : 2026-03-30 13:26

NVD link : CVE-2026-4833

Mitre link : CVE-2026-4833

CVE.ORG link : CVE-2026-4833

JSON object : View

Products Affected

No product.

CWE

CWE-404

Improper Resource Shutdown or Release

CWE-674

Uncontrolled Recursion

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