CVE-2026-21889Network attack vector

Screenshot disclosure via unrestricted media serving

Published Jan 14, 2026 · Updated Jan 14, 2026

Improper access control in Weblate before 5.15.2 allows remote attackers to read screenshot images by guessing their filenames. Bundled Apache and nginx configurations mapped DATA_DIR/media directly to /media/ with unrestricted access rather than passing requests through Weblate. Exploitation requires an existing screenshot and knowledge or successful guessing of its filename; the reported consequence is screenshot disclosure only.

CVSS severity2.3
Low
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Weblate before 5.15.2 allows remote attackers to read screenshot images by guessing their filenames. Bundled Apache and nginx configurations mapped DATA_DIR/media directly to /media/ with unrestricted access rather than passing requests through Weblate. Exploitation requires an existing screenshot and knowledge or successful guessing of its filename; the reported consequence is screenshot disclosure only.

The record

CVE
CVE-2026-21889
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
Weblate
Product
Weblate
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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=< 5.15.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Weblate · Weblateversion=< 5.15.2

Published CVSS scores

2.3GitHub, Inc.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
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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