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Fencer Intel
medium 6.5

CVE-2025-5257 json

Predictable Page Indexing Might Lead to Sensitive Data Exposure

published last yr. modified 4mo ago also GHSA-cqx4-9vqf-q3m8 , EUVD-2025-16245

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

SummaryThis advisory addresses a security vulnerability in Mautic where unpublished page previews could be accessed by unauthenticated users and potentially indexed by search engines. This could lead to the unintended disclosure of draft content or sensitive information.

Unauthorized Access to Unpublished Page Previews: The page preview functionality for unpublished content, accessible via predictable URLs (e.g., /page/preview/1, /page/preview/2), lacked proper authorization checks. This allowed any unauthenticated user to view content that was not yet intended for public release, and allowed search engines to index these private preview URLs, making the content publicly discoverable. MitigationMautic has patched this vulnerability by enforcing proper permission checks on preview pages. Users should upgrade to the patched version of Mautic or later.

Patch / fix

  • packagist mautic/core 4.4.16, 5.2.6, 6.0.2
  • Mautic Mautic < 6.0.2, <5.4.6, <4.4.16

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected packages

ecosystem package affected fixed in
packagist mautic/core
>=4.0.0, <4.4.16
>=5.0.0-alpha, <5.2.6
>=6.0.0-alpha, <6.0.2
4.4.16
5.2.6
6.0.2

Affected products

  • Mautic Mautic

Classification

Weakness
  • CWE-1284 Improper Validation of Specified Quantity in Input
  • CWE-284 Improper Access Control

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.