# CVE-2026-19974: treefrogframework treefrog-framework Session Cookie tsessioncookiestore.cpp strncmp improper authentication

> Attackers can bypass authentication in TreeFrog Framework via improper session cookie validation, potentially gaining unauthorized access.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Aug 2026
- **Updated:** 18 Aug 2026
- **Also known as:** GHSA-592m-25f6-58vw

## What is CVE-2026-19974?

CVE-2026-19974 is a medium-severity authentication bypass vulnerability in treefrogframework treefrog-framework, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-19974?


## How do I fix CVE-2026-19974?

No fix has been published for CVE-2026-19974 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19974 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19974 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19974 and fix it if it is affected.

What it is: CVE-2026-19974 is a medium-severity authentication bypass vulnerability in treefrogframework treefrog-framework, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19974 exists.

Affected product: treefrogframework treefrog-framework. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-19974/ (Markdown: https://insights.sbomify.com/CVE-2026-19974/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19974
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19974
- OSV: https://osv.dev/vulnerability/CVE-2026-19974

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19974/
Summaries are generated and may contain mistakes; the official description above is the record.