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CVE-2026-7210VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-7210· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium · fixed in Red Hat package updates : update Red Hat cpython when convenient.

Data as of 6 Nov 2026, 01:06 UTC

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 3.15.0b2, 3.14.6, 3.13.14 +3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Python Software FoundationCPythonAffected
  • >=3.15.0a1 <3.15.0b2
Fixed in
  • 3.15.0b2
Python Software FoundationCPythonAffected
  • >=3.14.0 <3.14.6
Fixed in
  • 3.14.6
Python Software FoundationCPythonAffected
  • >=3.13.0 <3.13.14
Fixed in
  • 3.13.14
Python Software FoundationCPythonAffected
  • >=3.12.0 <3.12.14
Fixed in
  • 3.12.14
Python Software FoundationCPythonAffected
  • >=3.11.0 <3.11.16
Fixed in
  • 3.11.16
Python Software FoundationCPythonAffected
  • <3.10.22
Fixed in
  • 3.10.22

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fixed version of the python3.10 packages is available (3.10.21-1.4.hum1) and should be applied to affected Red Hat Hardened Images. No other mitigations are currently recommended or available that meet Red Hat's criteria for ease of use and stability. Users should update to the fixed RPMs as provided by Red Hat.

Description

A vulnerability (CVE-2026-7210) was identified in the python3.10 packages included in Red Hat Hardened Images. The flaw involves insufficient entropy in the hash-flooding protection mechanism of the xml.parsers.expat and xml.etree.ElementTree modules, allowing a remote attacker to craft malicious XML documents that can trigger a denial of service (DoS) condition. The impact is limited to causing a DoS in the Python runtime. Default configurations of Red Hat systems are not affected. No mitigation is currently available that meets Red Hat's criteria for ease of use and stability.

References

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