CVE-2025-57757Network attack vector

Protected-news disclosure via unfiltered RSS feeds

Published Aug 28, 2025 · Updated Aug 28, 2025

Information disclosure in Contao 5.0.0-RC1 through 5.3.37 and 5.4.0-RC1 through 5.6.0 allows remote attackers to read protected news via RSS. NewsFeedListener passes configured archive identifiers directly into the feed query without checking eachKir archive's protected flag or the requester's group authorization. Exploitation requires a news-feed page that includes a protected archive; unauthenticated readers can obtain its news items but cannot alter content through this flaw.

CVSS severity5.3
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Contao 5.0.0-RC1 through 5.3.37 and 5.4.0-RC1 through 5.6.0 allows remote attackers to read protected news via RSS. NewsFeedListener passes configured archive identifiers directly into the feed query without checking eachKir archive's protected flag or the requester's group authorization. Exploitation requires a news-feed page that includes a protected archive; unauthenticated readers can obtain its news items but cannot alter content through this flaw.

The record

CVE
CVE-2025-57757
Published
Aug 28, 2025
Updated
Aug 28, 2025
Vendor
Contao
Product
Contao
Classifications
CWE-200, CWE-212, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2025Record 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=>= 5.0.0-RC1, < 5.3.38
  2. Affected versionversion=>= 5.4.0-RC1, < 5.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Contao · Contaoversion=>= 5.0.0-RC1, < 5.3.38; version=>= 5.4.0-RC1, < 5.6.1

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-212Improper Removal of Sensitive Information Before Storage or Transfer
T1213Data from Information Repositories

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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