How severe is CVE-2026-42150?

CVE-2026-42150 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-42150 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42150?

CVE-2026-42150 affects Weblate Wlc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42150?

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

Does CVE-2026-42150 have an EU (EUVD) identifier?

Yes. CVE-2026-42150 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28501.

When was CVE-2026-42150 published?

CVE-2026-42150 was published on 2026-05-08 and last updated on 2026-06-17.

CVE-2026-42150

CVE-2026-42150 is a medium-severity vulnerability in Weblate Wlc with a CVSS 3.x base score of 5.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.1)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28501
Weakness: CWE-79
Affected product: Weblate Wlc
Published: 2026-05-08
Last modified: 2026-06-17

Description

wlc is a Weblate command-line client using Weblate's REST API. Prior to version 2.0.0, the HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. This issue has been patched in version 2.0.0.

Frequently asked questions

What is CVE-2026-42150?: wlc is a Weblate command-line client using Weblate's REST API. Prior to version 2.0.0, the HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. This issue has been patched in version 2.0.0.
How severe is CVE-2026-42150?: CVE-2026-42150 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-42150 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42150?: CVE-2026-42150 affects Weblate Wlc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42150?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42150 have an EU (EUVD) identifier?: Yes. CVE-2026-42150 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28501.
When was CVE-2026-42150 published?: CVE-2026-42150 was published on 2026-05-08 and last updated on 2026-06-17.

References

Affected products (1)

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

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