PT-2026-28186 · Orc · Discount

Mthg · Published 2026-03-26 · Updated 2026-03-26 · CVE-2026-4833

NVD

CVSS v2.0

1.7

Low

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

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."

Exploit

Fix

Uncontrolled Recursion

Improper Resource Release

Weakness Enumeration

CWE-674

CWE-404

Related Identifiers

CVE-2026-4833

Affected Products

Discount

References · 8

• 🔥 https://github.com/user-attachments/files/25847391/crash00.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-4833 · Security Note
• https://github.com/Orc/discount/issues/305#issuecomment-4027546673 · Note
• https://vuldb.com/?ctiid.353138 · Note
• https://vuldb.com/?submit.775841 · Note
• https://vuldb.com/?id.353138 · Note
• https://github.com/Orc/discount · Note
• https://github.com/Orc/discount/issues/305 · Note