CVE-2026-20746 PingDirectory copying of virtual attributes leads to memory exhaustion
Authorized users can exhaust Java memory heap in PingDirectory when recent login history is enabled, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-20746?
CVE-2026-20746 is a medium-severity denial of service vulnerability in PingDirectory, published on 12 Jun 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Virtual attribute handling in Ping Identity PingDirectory in affected versions allows only authorized users to exhaust java memory heap when recent login history is enabled and copying virtual attributes that reference ds-privilege-name values.
Weakness: CWE-401
Which versions are affected by CVE-2026-20746?
How do I fix CVE-2026-20746?
No fix has been published for CVE-2026-20746 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-20746 being exploited?
There is no known exploitation of CVE-2026-20746 in the wild and no public exploit code.
Sources
Also known as GHSA-m4wx-pp34-v6v9.