Path Traversal in Heriklyma Cppwebframework
CVE-2026-5638
A vulnerability was detected in HerikLyma CPPWebFramework up to 3.1. This issue affects some unknown processing. Performing a manipulation results in path traversal. Remote exploitation of the attack is possible. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
- Heriklyma Cppwebframework — versions 3.0, 3.1
Weakness classification (CWE)
References
- vuldb.com/vuln/355426 (vdb-entry)
- vuldb.com/vuln/355426/cti (signature, permissions-required)
- vuldb.com/submit/785952 (third-party-advisory)
- github.com/HerikLyma/CPPWebFramework/issues/40 (issue-tracking)
- github.com/HerikLyma/CPPWebFramework/issues/40 (issue-tracking, exploit)
- github.com/HerikLyma/CPPWebFramework/ (product)
Frequently asked questions
- What is CVE-2026-5638?
- CVE-2026-5638 is a medium-severity vulnerability in Heriklyma Cppwebframework, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-04-06.
- How severe is CVE-2026-5638?
- Medium severity. CVSS v3 base score is 5.3 out of 10.