CVE-2026-35201
CVE-2026-35201 is a medium-severity vulnerability in Dafoster Rdiscount with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-19474
- Weakness: CWE-125
- Affected product: Dafoster Rdiscount
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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 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.
- How severe is CVE-2026-35201?
- CVE-2026-35201 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-35201 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-35201?
- CVE-2026-35201 affects Dafoster Rdiscount. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-35201?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-35201 have an EU (EUVD) identifier?
- Yes. CVE-2026-35201 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19474.
- When was CVE-2026-35201 published?
- CVE-2026-35201 was published on 2026-04-06 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:dafoster:rdiscount:*:*:*:*:*:ruby:*:*
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