CVE-2026-111946 Plack::Middleware::ETag versions from 0.04 before 0.06 for Perl disclose file inode numbers in the default ETag header
An attacker can obtain file inode numbers from ETag headers, aiding backend fingerprinting and file correlation.
- 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-2026-111946?
CVE-2026-111946 is a medium-severity vulnerability, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Plack::Middleware::ETag versions from 0.04 before 0.06 for Perl disclose file inode numbers in the default ETag header.
When the response body is a filehandle and the file_etag option is not set, the ETag is built from the file's inode number, modification time and size. Clients receiving affected responses may use the disclosed inode numbers to aid backend fingerprinting and correlation of files served through different URLs.
Weakness: CWE-497
Which versions are affected by CVE-2026-111946?
How do I fix CVE-2026-111946?
No fix has been published for CVE-2026-111946 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111946 being exploited?
There is no known exploitation of CVE-2026-111946 in the wild and no public exploit code.
Sources
Also known as GHSA-943g-rgq5-6xc8.