How severe is CVE-2026-33435?

CVE-2026-33435 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33435 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33435?

CVE-2026-33435 affects Weblate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33435?

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-2026-33435 have an EU (EUVD) identifier?

Yes. CVE-2026-33435 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23001.

When was CVE-2026-33435 published?

CVE-2026-33435 was published on 2026-04-15 and last updated on 2026-06-17.

CVE-2026-33435

CVE-2026-33435 is a high-severity vulnerability in Weblate with a CVSS 3.x base score of 8.0. 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-23.

Key facts

Severity: High (CVSS 3.x base score 8.0)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23001
Weakness: CWE-23
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 project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.

Frequently asked questions

What is CVE-2026-33435?: Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
How severe is CVE-2026-33435?: CVE-2026-33435 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33435 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33435?: CVE-2026-33435 affects Weblate. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33435?: 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-2026-33435 have an EU (EUVD) identifier?: Yes. CVE-2026-33435 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23001.
When was CVE-2026-33435 published?: CVE-2026-33435 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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