CVE-2026-34242Network attack vector

Authenticated file disclosure via unchecked ZIP symlinks

Published Apr 15, 2026 · Updated Apr 15, 2026

Path traversal in Weblate before 5.17 allows remote authenticated users to read host files through project-language ZIP downloads. The project-language ZIP export path adds component template files without first validating that their resolved targets remain inside the repository, so a repository symlink can archive an arbitrary server-side file. Exploitation requires an authenticated user who can influence a symlink in a translated repository and invoke the ZIP download; the resulting archive discloses readable host data without modifying it.

CVSS severity7.7
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Weblate before 5.17 allows remote authenticated users to read host files through project-language ZIP downloads. The project-language ZIP export path adds component template files without first validating that their resolved targets remain inside the repository, so a repository symlink can archive an arbitrary server-side file. Exploitation requires an authenticated user who can influence a symlink in a translated repository and invoke the ZIP download; the resulting archive discloses readable host data without modifying it.

The record

CVE
CVE-2026-34242
Published
Apr 15, 2026
Updated
Apr 15, 2026
Vendor
Weblate
Product
Weblate
Classifications
CWE-200, CWE-59, CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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=< 5.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Weblate · Weblateversion=< 5.17

Published CVSS scores

7.7GitHub CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-59Improper Link Resolution Before File Access ('Link Following')
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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