Auth bypass in Treefrogframework Treefrog-Framework
CVE-2026-19974
A security flaw has been discovered in treefrogframework treefrog-framework up to 2.11.2. This vulnerability affects the function std::strncmp of the file src/tsessioncookiestore.cpp of the component Session Cookie Handler. The manipulation results in improper authentication. The attack can be launched remotely. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (46.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Treefrogframework Treefrog-Framework — versions 2.11.0, 2.11.1, 2.11.2
Weakness classification (CWE)
References
- vuldb.com/vuln/391153 (technical-description, vdb-entry)
- vuldb.com/vuln/391153/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-19974 (third-party-advisory)
- vuldb.com/submit/873625 (third-party-advisory)
- github.com/treefrogframework/treefrog-framework/issues/436 (issue-tracking)
- github.com/treefrogframework/treefrog-framework/ (product)
- github.com/theopaid/Authentication-Bypass-via-HMAC-Session-Cookie-Forgery-treef… (exploit)
Frequently asked questions
- What is CVE-2026-19974?
- CVE-2026-19974 is a medium-severity vulnerability in Treefrogframework Treefrog-Framework, classified under Improper Authentication. CVSS score: 5.6/10. Published 2026-08-17.
- How severe is CVE-2026-19974?
- Medium severity. CVSS v3 base score is 5.6 out of 10.