CVE-2025-30344 Information disclosure in OpenSlides

Medium 5.3 Published Updated

Attackers can enumerate valid usernames via timing differences in login responses, exposing user existence information.

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-2025-30344?

CVE-2025-30344 is a medium-severity vulnerability in Intevation OpenSlides, published on 21 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in OpenSlides before 4.2.5. During login at the /system/auth/login/ endpoint, the system's response times differ depending on whether a user exists in the system. The timing discrepancy stems from the omitted hashing of the password (e.g., more than 100 milliseconds).

Weakness: CWE-203, CWE-208

Which versions are affected by CVE-2025-30344?

It affects 1 product.

Products include Openslides Openslides.

How do I fix CVE-2025-30344?

No fix has been published for CVE-2025-30344 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-30344 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-30344 exists.

Sources

Also known as GHSA-jvfr-jf2p-rc53.

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