How severe is CVE-2026-34393?

CVE-2026-34393 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-34393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34393?

CVE-2026-34393 affects Weblate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34393?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34393 have an EU (EUVD) identifier?

Yes. CVE-2026-34393 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23005.

When was CVE-2026-34393 published?

CVE-2026-34393 was published on 2026-04-15 and last updated on 2026-06-17.

CVE-2026-34393

CVE-2026-34393 is a high-severity vulnerability in Weblate with a CVSS 3.x base score of 8.8. 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-269.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23005
Weakness: CWE-269
Affected product: Weblate
Published: 2026-04-15
Last modified: 2026-06-17

Description

Weblate is a web based localization tool. In versions prior to 5.17, the user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17.

Frequently asked questions

What is CVE-2026-34393?: Weblate is a web based localization tool. In versions prior to 5.17, the user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17.
How severe is CVE-2026-34393?: CVE-2026-34393 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-34393 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34393?: CVE-2026-34393 affects Weblate. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34393?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34393 have an EU (EUVD) identifier?: Yes. CVE-2026-34393 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23005.
When was CVE-2026-34393 published?: CVE-2026-34393 was published on 2026-04-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:weblate:weblate:*:*:*:*:*:*:*:*

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