CVE-2026-86709 The Pressengine <= 1.0 - Unauthenticated Authentication Bypass
Unauthenticated attackers can bypass authentication to log in as any user, including administrators, due to flawed session issuance logic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86709?
CVE-2026-86709 is a critical authentication bypass vulnerability in Unknown The Pressengine, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Pressengine WordPress plugin through 1.0 does not stop its login handler from issuing a session when authentication fails, allowing unauthenticated attackers to log in as any user, including administrators.
Weakness: CWE-287
Which versions are affected by CVE-2026-86709?
How do I fix CVE-2026-86709?
No fix has been published for CVE-2026-86709 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-86709 being exploited?
There is no known exploitation of CVE-2026-86709 in the wild and no public exploit code.
Sources
Also known as GHSA-r5f2-c2h7-4jxh.