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."

Database specific

{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "3.0.1.0"
                },
                {
                    "last_affected": "3.0.1.0"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4833.json",
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-404",
        "CWE-674"
    ]
}

References

Affected packages

Git / github.com/orc/discount

Affected ranges

Type

GIT

Repo

https://github.com/orc/discount

Events

Introduced

41f71fe10f483266490dee91063775b398fd1049

Last affected

c214286f91cb754450121ad1f55a0e9470d3a16c

Database specific

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "3.0.1.1"
        },
        {
            "last_affected": "3.0.1.1"
        },
        {
            "introduced": "3.0.1.2"
        },
        {
            "last_affected": "3.0.1.2"
        }
    ]
}

Affected versions

3.*

3.0.1.1

3.0.1.2

v3.*

v3.0.1.1

v3.0.1.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4833.json"