CVE-2026-110754 Text::CSV_XS versions before 1.65 for Perl leak the parsed fields of a record that fails to parse in getline
Attackers can cause memory exhaustion in Perl applications using Text::CSV_XS by sending malformed CSV records, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-110754?
CVE-2026-110754 is a medium-severity denial of service vulnerability, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Text::CSV_XS versions before 1.65 for Perl leak the parsed fields of a record that fails to parse in getline.
getline collects the fields of a record into a new array and returns a reference to it only when the parse succeeds. When the record has a syntax error, getline returns undef and never frees the array or the fields parsed before the error.
A long-running process parsing untrusted CSV retains every malformed record it is sent, so repeated malformed input exhausts its memory.
Weakness: CWE-401
Which versions are affected by CVE-2026-110754?
How do I fix CVE-2026-110754?
Upgrade to a fixed version.
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-2026-110754 being exploited?
There is no known exploitation of CVE-2026-110754 in the wild and no public exploit code.
Sources
Also known as AZL-109763, DEBIAN-CVE-2026-110754, GHSA-v7vg-mqfq-633j, UBUNTU-CVE-2026-110754.