How severe is CVE-2026-0864?

CVE-2026-0864 has a CVSS 4.0 base score of 4.1, rated medium severity.

Is CVE-2026-0864 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-0864?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-0864 have an EU (EUVD) identifier?

Yes. CVE-2026-0864 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38554.

When was CVE-2026-0864 published?

CVE-2026-0864 was published on 2026-06-23 and last updated on 2026-06-25.

CVE-2026-0864

CVE-2026-0864 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 4.0 base score 4.1)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38554
Weakness: CWE-74
Published: 2026-06-23
Last modified: 2026-06-25

Description

When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.

Frequently asked questions

What is CVE-2026-0864?: When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.
How severe is CVE-2026-0864?: CVE-2026-0864 has a CVSS 4.0 base score of 4.1, rated medium severity.
Is CVE-2026-0864 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-0864?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0864 have an EU (EUVD) identifier?: Yes. CVE-2026-0864 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38554.
When was CVE-2026-0864 published?: CVE-2026-0864 was published on 2026-06-23 and last updated on 2026-06-25.

References

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