CVE-2026-63159 Omnispace Agora Project < 26.10.0 Predictable Password-Reset Token Account Takeover

Critical 9.1 Published Updated

Unauthenticated attackers can hijack user accounts by predicting password-reset tokens derived from weak hashing of credentials.

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-2026-63159?

CVE-2026-63159 is a critical vulnerability in Omnispace Agora Project, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Omnispace Agora Project before 26.10.0 contains a predictable password-reset token vulnerability that allows unauthenticated attackers to take over user accounts by computing the reset token as sha1(login.password), a deterministic and reusable value. Attackers can derive or brute-force the reset token from known or guessed login and password combinations to forge valid password-reset requests and hijack arbitrary accounts.

Weakness: CWE-640

Which versions are affected by CVE-2026-63159?

How do I fix CVE-2026-63159?

No fix has been published for CVE-2026-63159 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-63159 being exploited?

There is no known exploitation of CVE-2026-63159 in the wild and no public exploit code.

Sources

Also known as GHSA-2r64-8hvp-8498.

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