GHSA-cqx4-9vqf-q3m8: mautic/core (CVE-2025-5257)

Mautic's Predictable Page Indexing Might Lead to Sensitive Data Exposure

CVSS 6.5 MediumEPSS 0.0037 · 30th percentile

Published by the GitHub Advisory Database at 28 May 2025, 17:38 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
mautic/core	Packagist	>=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

Identifiers

GHSA-cqx4-9vqf-q3m8 · CVE-2025-5257 · PKSA-x59g-t3yz-wmhz

Weakness (CWE)

CWE-284 · CWE-1284

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Mautic's mautic/core package, versions from 4.0.0 to before 4.4.16, from 5.0.0-alpha to before 5.2.6, and from 6.0.0-alpha to before 6.0.2, lets unpublished page previews be viewed without authentication. Because the preview URLs are predictable, search engines could index them, exposing draft or sensitive content. Upgrade to 4.4.16, 5.2.6, 6.0.2 or later.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	CNA (Mautic)

CISA KEV Not listed.
EPSS 0.0037, the 30th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:27 UTC First seen by agentprime
31 Oct 2026, 14:27 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.