Is CVE-2026-7210 in the CISA KEV catalog?

No. CVE-2026-7210 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-7210?

CVE-2026-7210 has a CVSS v3 base score of 7.5 (Low).

What is the EPSS score for CVE-2026-7210?

CVE-2026-7210 has an EPSS score of 0.79% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7210?

Upgrade idle-python2.7 on ubuntu 16.04 to 2.7.12-1ubuntu0~16.04.18+esm20 or later. Fixes are available for 29 affected products.

CVE & CISA-KEV Catalog

CVE-2026-7210

LOW

7.5

CVSS v3

NVD

Description

`xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch.

CWE-331

How to fix

Remediation Available

idle-python2.7Ubuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

idle-python3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

libpython2.7Ubuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

libpython2.7-devUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

libpython2.7-minimalUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

libpython2.7-stdlibUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

libpython2.7-testsuiteUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

libpython3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

libpython3.5-devUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

libpython3.5-minimalUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

libpython3.5-stdlibUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

libpython3.5-testsuiteUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

python2.7Ubuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

python2.7-devUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

python2.7-docUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

python2.7-examplesUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

python2.7-minimalUbuntu

Fixed in:2.7.12-1ubuntu0~16.04.18+esm20USN-8524-1

python3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

python3.5-devUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

python3.5-docUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

python3.5-examplesUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

python3.5-minimalUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

python3.5-venvUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.13+esm23USN-8524-1

Python 2Windows application

Affected:3.15.0Fixed in:3.15.0Python Software Foundation

Python 3.10Windows application

Affected:3.15.0Fixed in:3.15.0Python Software Foundation

Python 3.11Windows application

Affected:3.15.0Fixed in:3.15.0Python Software Foundation

Python 3.12Windows application

Affected:3.15.0Fixed in:3.15.0Python Software Foundation

Python 3.8Windows application

Affected:3.15.0Fixed in:3.15.0Python Software Foundation

Python 3.9Windows application

Affected:3.15.0Fixed in:3.15.0Python Software Foundation

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.79%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Patch5

Third-Party Advisory3

Issue Tracking1

github.com

Related Vulnerabilities

Other CWE-331 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2008-1447	Medium	6.8	95%	-	Fix
CVE-2018-18326	High	7.5	54%	-	-
CVE-2018-15812	High	7.5	47%	-	-
CVE-2023-38357	Medium	5.3	5.3%	-	Fix
CVE-2015-3405	High	7.5	5.3%	-	Fix
CVE-2008-2108	Critical	9.8	4.3%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-15.