Discount is an implementation of John Gruber's Markdown markup language in C. From 1.3.1.1 to before 2.2.7.4, a signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INT_MAX are truncated to a signed int before entering the native parser, allowing the parser to read past the end of the supplied buffer and crash the process. This vulnerability is fixed in 2.2.7.4.
History

Mon, 06 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
Description Discount is an implementation of John Gruber's Markdown markup language in C. From 1.3.1.1 to before 2.2.7.4, a signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INT_MAX are truncated to a signed int before entering the native parser, allowing the parser to read past the end of the supplied buffer and crash the process. This vulnerability is fixed in 2.2.7.4.
Title Discount has an Out-of-bounds Read in rdiscount
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-06T19:49:48.806Z

Reserved: 2026-04-01T18:48:58.937Z

Link: CVE-2026-35201

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-06T20:16:27.893

Modified: 2026-04-06T20:16:27.893

Link: CVE-2026-35201

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.