CVE-2026-7111 Use after free in Text::CSV XS
Attackers can trigger memory corruption or crashes in Perl applications using Text::CSV_XS with registered callbacks that modify the argument stack.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-7111?
CVE-2026-7111 is a high-severity use after free vulnerability in HMBRAND Text::CSV_XS, published on 29 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Text::CSV_XS versions before 1.62 for Perl have a use-after-free when registered callbacks extend the Perl argument stack, which may enable type confusion or memory corruption.
The Parse, print, getline, and getline_all methods invoke registered callbacks (for example after_parse, before_print, or on_error) and cache the Perl argument stack pointer across the call. If a callback extends the argument stack enough to trigger a reallocation, the return value is written through the stale pointer into the freed buffer, and the caller reads the original $self argument as the return value instead.
Calling code that expects parsed data from getline_all receives the Text::CSV_XS object in its place, leading to logic errors or crashes. Text::CSV_XS objects used without any registered callbacks are not affected.
Which versions are affected by CVE-2026-7111?
It affects 1 product.
Linux distribution packages (1)
perl-Text-CSV_XS openSUSE:Tumbleweed | All versions | 1.620.0-1.1 |
Products include Hmbrand Text\.
How do I fix CVE-2026-7111?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-7111 being exploited?
There is no known exploitation of CVE-2026-7111 in the wild and no public exploit code.
Sources
Also known as AZL-85922, DEBIAN-CVE-2026-7111, GHSA-29pg-8q2m-r6xm, MGASA-2026-0370, SUSE-SU-2026:1936-1, SUSE-SU-2026:21596-1 and 3 more.