CVE-2026-45106Network attack vector

Stored cross-site scripting via unescaped search preview

Published Jun 10, 2026 · Updated Jun 10, 2026

Stored cross-site scripting in Weblate before 2026.5 allows remote authenticated users to inject HTML and CSS through unit metadata. The live search preview in weblate/static/editor/tools/search.js inserts API result.context and result.source values into an HTML string that jQuery appends to the DOM without escaping. Contributor access is required to store the content, and another authenticated editor must run a matching search before the injected markup renders in that editor.

CVSS severity4.6
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Weblate before 2026.5 allows remote authenticated users to inject HTML and CSS through unit metadata. The live search preview in weblate/static/editor/tools/search.js inserts API result.context and result.source values into an HTML string that jQuery appends to the DOM without escaping. Contributor access is required to store the content, and another authenticated editor must run a matching search before the injected markup renders in that editor.

The record

CVE
CVE-2026-45106
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Weblate
Product
Weblate
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2026.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Weblate · Weblateversion=< 2026.5

Published CVSS scores

4.6GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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