# CVE-2026-28677: OpenSift: Insufficient URL destination restrictions in ingest flow could enable SSRF-style internal access

> Attackers can exploit insufficient URL restrictions in the ingest flow to access internal resources via SSRF in OpenSift deployments.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Mar 2026
- **Updated:** 6 Mar 2026
- **Also known as:** GHSA-5jfc-p787-2mf9

## What is CVE-2026-28677?

CVE-2026-28677 is a high-severity server-side request forgery vulnerability in OpenSift, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Prior to version 1.6.3-alpha, the URL ingest pipeline accepted user-controlled remote URLs with incomplete destination restrictions. Although private/local host checks existed, missing restrictions for credentialed URLs, non-standard ports, and cross-host redirects left SSRF-class abuse paths in non-localhost deployments. This issue has been patched in version 1.6.3-alpha.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-28677?

It affects 1 product.


Products: Opensift Opensift.

## How do I fix CVE-2026-28677?

No fix has been published for CVE-2026-28677 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-28677 being exploited?

There is no known exploitation of CVE-2026-28677 in the wild and no public exploit code.

## Other vulnerabilities in OpenSift

- [CVE-2026-27169](https://insights.sbomify.com/CVE-2026-27169/): OpenSift: Persistent XSS Chat Tool Rendering (high 8.9)
- [CVE-2026-28676](https://insights.sbomify.com/CVE-2026-28676/): OpenSift: Insufficient path containment checks in storage helpers could allow path traversal-style file operations (high 8.8)
- [CVE-2026-27170](https://insights.sbomify.com/CVE-2026-27170/): OpenSift: SSRF risk in URL ingestion endpoint (high 7.1)
- [CVE-2026-27189](https://insights.sbomify.com/CVE-2026-27189/): OpenSift: Race-prone local persistence could cause state corruption/loss (medium 6.6)
- [CVE-2026-28675](https://insights.sbomify.com/CVE-2026-28675/): OpenSift: Sensitive implementation details exposed via raw exception messages and token-returning endpoints (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-28677 and fix it if it is affected.

What it is: CVE-2026-28677 is a high-severity server-side request forgery vulnerability in OpenSift, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-28677 in the wild and no public exploit code.

Affected product: OpenSift. 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-2026-28677/ (Markdown: https://insights.sbomify.com/CVE-2026-28677/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-28677
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28677
- OSV: https://osv.dev/vulnerability/CVE-2026-28677

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-28677/
Summaries are generated and may contain mistakes; the official description above is the record.