This can be reproduced without xmltodict, using only the stdlib:
>>> from xml.parsers import expat
>>> parser = expat.ParserCreate(namespace_separator=':')
>>> parser.Parse('<foo></foo>', True)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
xml.parsers.expat.ExpatError: out of memory: line 1, column 0
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https://bugs.launchpad.net/bugs/1961800
Title:
Seeing out of memory errors after libexpat1 upgrade to
2.2.5-3ubuntu0.4 (bionic) or 2.2.9-1ubuntu0.2 (focal)
Status in expat package in Ubuntu:
Invalid
Status in python-xmltodict package in Ubuntu:
Confirmed
Bug description:
I started seeing errors parsing XML files today (Feb 22, 2022) after
my system was updated to 2.2.5-3ubuntu0.4. This is on a bionic server.
The parsing is being done by python3's xmltodict module, which uses
python3 expat as the actual parser. This is the error it raises:
xml.parsers.expat.ExpatError: out of memory: line 1, column 0
So far this is happening on multiple xml files, although they all come
from the same source (these are jenkins config.xml files). I'm working
on coming up with a minimal test case which I'll provide once I have
it cleaned up of any private data.
[System info]
$ lsb_release -rd
Description: Ubuntu 18.04.6 LTS
Release: 18.04
$ apt-cache policy libexpat1
libexpat1:
Installed: 2.2.5-3ubuntu0.4
Candidate: 2.2.5-3ubuntu0.4
Version table:
*** 2.2.5-3ubuntu0.4 500
500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64
Packages
500 http://archive.ubuntu.com/ubuntu bionic-security/main amd64
Packages
100 /var/lib/dpkg/status
2.2.5-3 500
500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
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