# CVE-2025-27912: Cross-site request forgery in Seq

> Attackers can perform actions on behalf of users via CSRF if specific authentication methods are enabled, requiring an upgrade to Seq.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C`)
- **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:** 11 Mar 2025
- **Updated:** 11 Mar 2025
- **Also known as:** GHSA-mpcp-p2wc-692j

## What is CVE-2025-27912?

CVE-2025-27912 is a high-severity vulnerability in Datalust Seq, published on 11 Mar 2025. 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

An issue was discovered in Datalust Seq before 2024.3.13545. Missing Content-Type validation can lead to CSRF when (1) Entra ID or OpenID Connect authentication is in use and a user visits a compromised/malicious site, or (2) when username/password or Active Directory authentication is in use and a user visits a compromised/malicious site under the same effective top-level domain as the Seq server. Exploitation of the vulnerability allows the attacker to conduct impersonation attacks and perform actions in Seq on behalf of the targeted user.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2025-27912?

It affects 1 product.


Products: Datalust Seq.

## How do I fix CVE-2025-27912?

No fix has been published for CVE-2025-27912 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27912 being exploited?

There is no known exploitation of CVE-2025-27912 in the wild and no public exploit code.

## Other vulnerabilities in Datalust Seq

- [CVE-2018-8096](https://insights.sbomify.com/CVE-2018-8096/): Auth bypass in n/a (critical 9.8)
- [CVE-2024-29866](https://insights.sbomify.com/CVE-2024-29866/): Privilege escalation in n/a (critical 9.1)
- [CVE-2025-27911](https://insights.sbomify.com/CVE-2025-27911/): Denial of service in Seq (medium 6.5)
- [CVE-2021-41329](https://insights.sbomify.com/CVE-2021-41329/): Information disclosure in n/a (medium 6.5)
- [CVE-2024-58102](https://insights.sbomify.com/CVE-2024-58102/): Denial of service in Seq (medium 5.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27912 and fix it if it is affected.

What it is: CVE-2025-27912 is a high-severity vulnerability in Datalust Seq, published on 11 Mar 2025. 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-2025-27912 in the wild and no public exploit code.

Affected product: Datalust Seq. 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-2025-27912/ (Markdown: https://insights.sbomify.com/CVE-2025-27912/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27912
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27912
- OSV: https://osv.dev/vulnerability/CVE-2025-27912

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27912/
Summaries are generated and may contain mistakes; the official description above is the record.