# CVE-2026-81179: SysReptor: Host header injection might allow account takeover

> An attacker can hijack password reset links via Host header injection to take over user accounts in SysReptor installations with wildcard ALLOWED_HOSTS.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-9x2r-5pff-8w6c

## What is CVE-2026-81179?

CVE-2026-81179 is a high-severity vulnerability in Syslifters sysreptor, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

SysReptor is a fully customizable pentest reporting platform. Prior to 2026.58, installations that enable password reset by email while configuring ALLOWED_HOSTS with a wildcard accept an attacker-controlled Host header when generating a password reset link. An unauthenticated attacker can request a reset email whose link points to an attacker-controlled system, and a victim who follows that link can disclose the reset token, allowing the attacker to reset the victim's password and take over the account. Exploitation also requires a configured email gateway and an email address for the victim, while some reverse proxy configurations may reject the hostile Host header. This issue is fixed in version 2026.58.

Weakness: CWE-807 (Reliance on Untrusted Inputs in a Security Decision)

## Which versions are affected by CVE-2026-81179?


## How do I fix CVE-2026-81179?

No fix has been published for CVE-2026-81179 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-81179 being exploited?

There is no known exploitation of CVE-2026-81179 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-81179 and fix it if it is affected.

What it is: CVE-2026-81179 is a high-severity vulnerability in Syslifters sysreptor, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-81179 in the wild and no public exploit code.

Affected product: Syslifters sysreptor. 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-2026-81179/ (Markdown: https://insights.sbomify.com/CVE-2026-81179/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-81179
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-81179
- OSV: https://osv.dev/vulnerability/CVE-2026-81179

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-81179/
Summaries are generated and may contain mistakes; the official description above is the record.