Vulnerability · Published Apr 6, 2026 · Assigned by VulDB
CVE-2026-5638HerikLyma CPPWebFramework path traversal
Medium 5.3
In plain English
A medium-severity path traversal in CPPWebFramework from HerikLyma. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 57.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HerikLyma | CPPWebFramework | 3.03.1 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
References
- VDB-355426 | HerikLyma CPPWebFramework path traversal vdb-entry
- VDB-355426 | CTI Indicators (IOB, IOC, TTP) signature, permissions-required
- Submit #785952 | HerikLyma CPPWebFramework <= 3.1 (HTTP Server Header) Relative Path Traversal third-party-advisory
- https://github.com/HerikLyma/CPPWebFramework/issues/40 issue-tracking
- https://github.com/HerikLyma/CPPWebFramework/issues/40#issue-4118436068 exploit, issue-tracking
- https://github.com/HerikLyma/CPPWebFramework/ product