Resource exhaustion in Kokke Tiny-Regex-C
CVE-2026-11478
A flaw has been found in kokke tiny-regex-c up to f2632c6d9ed25272987471cdb8b70395c2460bdb. This vulnerability affects the function matchstar of the file re.c of the component Pattern Handler. This manipulation causes inefficient regular expression complexity. The attack is restricted to local execution. The exploit has been published and may be used. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.001 (1.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Kokke Tiny-Regex-C — versions f2632c6d9ed25272987471cdb8b70395c2460bdb
Weakness classification (CWE)
References
- github.com/kokke/tiny-regex-c/ (product)
- github.com/kokke/tiny-regex-c/issues/100 (issue-tracking)
- github.com/user-attachments/files/28046213/tiny-regex-c-redos-poc.zip (exploit)
- vuldb.com/cve/CVE-2026-11478 (third-party-advisory)
- vuldb.com/submit/833966 (third-party-advisory)
- vuldb.com/vuln/369098 (technical-description, vdb-entry)
- vuldb.com/vuln/369098/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-11478?
- CVE-2026-11478 is a low-severity vulnerability in Kokke Tiny-Regex-C, classified under Uncontrolled Resource Consumption. CVSS score: 3.3/10. Published 2026-06-08.
- How severe is CVE-2026-11478?
- Low severity. CVSS v3 base score is 3.3 out of 10.