PT-2026-65499

CVE-2026-6879

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Published

2026-07-28

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Updated

2026-10-20

Description by

CVSS 4.0
6.3
Medium
MetricsAV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions The product name cannot be determined (affected versions not specified)
Description Certain functions exhibit quadratic time complexity, denoted as O(n^2), when processing XML documents containing numerous siblings with the same tag. This occurs specifically when using XPath index predicates such as [1], [last()], or [last()-N]. The affected functions include Element.findall() and fully-consumed Element.iterfind(). Additionally, Element.find() is impacted when the first match is located near the end of the sibling list, such as when using [last()] or [last()-N], although .//item[1] short-circuits after the first match.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploitability
Exploit
Researchers
Vendors
Affected products
Related identifiers
AZL-94157
AZL-94299
BIT-LIBPYTHON-2026-6879
BIT-PYTHON-2026-6879
BIT-PYTHON-MIN-2026-6879
CLSA-2026-1791921187
ECHO-B4F7-133A-6293
OESA-2026-3252
OESA-2026-3253
OESA-2026-3254
OESA-2026-3396
OESA-2026-3433
OPENSUSE-SU-2026:11748-1
OPENSUSE-SU-2026:11817-1
PSF-2026-34
RHSA-2026:48238
RHSA-2026:48246
RHSA-2026:48253
RHSA-2026:48278
RHSA-2026:48279
RHSA-2026:54534
RHSA-2026:54554
SUSE-SU-2026:4401-1
SUSE-SU-2026:4411-1
SUSE-SU-2026:4633-1
SUSE-SU-2026:4743-1
SUSE-SU-2026:4744-1
SUSE-SU-2026:4754-1
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