CVE-2026-100870 Sylius before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 Admin Password Reset Poisoning via Host Header
Attackers can hijack admin accounts by poisoning password reset links via forged Host headers in Sylius.
- 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
- None listed
What is CVE-2026-100870?
CVE-2026-100870 is a high-severity vulnerability in Sylius, published on 27 Sep 2026. 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
Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can request password resets for known administrator email addresses with forged Host headers to intercept valid reset tokens and take over administrator accounts.
Weakness: CWE-640
Which versions are affected by CVE-2026-100870?
How do I fix CVE-2026-100870?
No fix has been published for CVE-2026-100870 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-100870 being exploited?
There is no known exploitation of CVE-2026-100870 in the wild and no public exploit code.
Sources
Also known as GHSA-753f-ggfx-2h8w, GHSA-77w3-2367-7xvq.