CVE-2026-4833
Orc discount Markdown markdown.c compile recursion
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
2th
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."
| CWE | CWE-674 CWE-404 |
| Vendor | orc |
| Product | discount |
| Published | Mar 26, 2026 |
| Last Updated | Mar 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Orc / discount
3.0.1.0 3.0.1.1 3.0.1.2
References
vuldb.com: https://vuldb.com/?id.353138 vuldb.com: https://vuldb.com/?ctiid.353138 vuldb.com: https://vuldb.com/?submit.775841 github.com: https://github.com/Orc/discount/issues/305 github.com: https://github.com/Orc/discount/issues/305#issuecomment-4027546673 github.com: https://github.com/user-attachments/files/25847391/crash00.md github.com: https://github.com/Orc/discount/
Credits
🔍 MTHG (VulDB User)