Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links

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Summary

CVECVE-2026-48902
StatePUBLISHED
AssignerJoomla
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-26 17:16:54 UTC
Updated2026-05-28 14:16:23 UTC
DescriptionThe password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't explicitly set.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000180000 probability, percentile 0.052480000 (date 2026-05-27)

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Joomla! Project Joomla! CMS affected 3.9.0-5.4.5 Not specified
CNA Joomla! Project Joomla! CMS affected 6.0.0-6.1.0 Not specified

References

ReferenceSourceLinkTags
developer.joomla.org/security-centre/1050-20260518-core-transport-encryption-downg... [email protected] developer.joomla.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: @ZeroXJacks, https://github.com/ZeroXJacks (en)

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