CVE catalog

CVE-2026-35201

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

[CVE catalog]

Severity: Medium · CVSS 5.9
Published: Apr 6, 2026, 8:16:27 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.27% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	discount	sid	`2.2.7-2.1`	vulnerable
Debian	discount	forky	`2.2.7-2.1`	vulnerable
Debian	discount	trixie	`2.2.7-2.1`	vulnerable
Debian	discount	bookworm	`2.2.7-2`	vulnerable
Cpe	discount	Not reported	Not reported	vulnerable
Cpe	rdiscount	Not reported	`2.2.7.4`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	discount	source	sid	`(unfixed)`	not yet assigned	Not reported	[1136025]
Debian	discount	source	forky	`(unfixed)`	not yet assigned	Not reported	[1136025]
Debian	discount	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1136025]
Debian	discount	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1136025]
Cpe	rdiscount	cpe	Not reported	`2.2.7.4`	Not reported	Not reported	Not reported

[Debian bug #1136025]

Notes

[trixie] discount: Minor issue [bookworm] discount: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[discount]Affected
Details (2)
- 2.2.7-2 · amd64 · bookworm
  Affected
  nvd · discount · debian · bookworm; nvd · discount · debian · 12
- 2.2.7-2 · arm64 · bookworm
  Affected
  nvd · discount · debian · bookworm; nvd · discount · debian · 12
[libmarkdown2]Affected
Source package: [discount]
Details (2)
- 2.2.7-2 · amd64 · bookworm
  Affected
  nvd · discount · debian · bookworm; nvd · discount · debian · 12
- 2.2.7-2 · arm64 · bookworm
  Affected
  nvd · discount · debian · bookworm; nvd · discount · debian · 12
[libmarkdown2-dev]Affected
Source package: [discount]
Details (2)
- 2.2.7-2 · amd64 · bookworm
  Affected
  nvd · discount · debian · bookworm; nvd · discount · debian · 12
- 2.2.7-2 · arm64 · bookworm
  Affected
  nvd · discount · debian · bookworm; nvd · discount · debian · 12

[Debian 13 (Trixie)]

[discount]Affected
Details (2)
- 2.2.7-2.1 · amd64 · trixie
  Affected
  nvd · discount · debian · 13
- 2.2.7-2.1 · arm64 · trixie
  Affected
  nvd · discount · debian · 13
[libmarkdown2]Affected
Source package: [discount]
Details (2)
- 2.2.7-2.1 · amd64 · trixie
  Affected
  nvd · discount · debian · 13
- 2.2.7-2.1 · arm64 · trixie
  Affected
  nvd · discount · debian · 13
[libmarkdown2-dev]Affected
Source package: [discount]
Details (2)
- 2.2.7-2.1 · amd64 · trixie
  Affected
  nvd · discount · debian · 13
- 2.2.7-2.1 · arm64 · trixie
  Affected
  nvd · discount · debian · 13

Observed: Oct 23, 2026, 10:34:58 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]