Is CVE-2026-21889 actively exploited?

CVE-2026-21889 has no public evidence of in-the-wild exploitation as of 2026-01-14.

What is the CVSS score for CVE-2026-21889?

CVE-2026-21889 has a CVSS score of 2.3 (LOW severity). Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

How do I patch CVE-2026-21889?

Vendor patch guidance is linked from the references on this page. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-21889.

Which products are affected by CVE-2026-21889?

Affected products for CVE-2026-21889 are listed on this page once vendor data becomes available.

CVE-2026-21889 - remediation guidance & executive summary

Description

Weblate is a web based localization tool. Prior to 5.15.2, the screenshot images were served directly by the HTTP server without proper access control. This could allow an unauthenticated user to access screenshots after guessing their filename. This vulnerability is fixed in 5.15.2.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector: network
Complexity: high
Privileges: low
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-284

Metadata

Primary Vendor: UNKNOWN
Published: 1/14/2026
Last Modified: 1/14/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-21889

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary