Cyber Resilience

CVE-2026-48902

Joomla\! 3.0.0 – 5.4.6

Published
26 May 2026
Modified
24 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0025 17th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-48902 is a critical-severity Cleartext Transmission of Sensitive Information (CWE-319) vulnerability in Joomla Joomla\!. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Network Sniffing (T1040); ranked at the 17th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SC-8 (Transmission Confidentiality and Integrity) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A04:2025 Cryptographic Failures

EU & UK References

Vulnerability Data

The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't explicitly set.

CWE(s)
NVD-CWE-noinfoCWE-319

Related Threats

MITRE ATT&CK Enterprise Techniques

T1040 Network Sniffing Credential Access
Adversaries may passively sniff network traffic to capture information about an environment, including authentication material passed over the network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-48897Same product: Joomla Joomla\!
CVE-2025-25227Same product: Joomla Joomla\!
CVE-2026-48896Same product: Joomla Joomla\!
CVE-2023-23754Same product: Joomla Joomla\!
CVE-2026-48953Same product: Joomla Joomla\!
CVE-2024-40748Same product: Joomla Joomla\!
CVE-2026-21632Same product: Joomla Joomla\!
CVE-2026-48956Same product: Joomla Joomla\!
CVE-2026-48947Same product: Joomla Joomla\!
CVE-2026-48949Same product: Joomla Joomla\!

Affected Assets

joomla
joomla\!
3.0.0 — 5.4.6 · 6.0.0 — 6.1.1

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SC-8 Transmission Confidentiality and Integrity good match

SC-8 directly requires protecting confidentiality of transmitted information, which structurally eliminates cleartext transmission of sensitive data.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.DS-02 full match
prevents

Encryption of data-in-transit directly prevents cleartext transmission while the control also addresses integrity and availability.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.21 Security of network services mostly match
prevents

Specifying encryption and other security technology for network services prevents transmission of sensitive information in cleartext over potentially untrusted channels.

A.5.14 Information transfer partial match
prevents

Mandating cryptographic protection and stronger authentication on public networks stops the transmission of plaintext sensitive information.

A.6.7 Remote working partial match
mitigates

Specifying communications-security requirements and secure remote-access methods (including encryption expectations) prevents the transmission of sensitive data in cleartext over home or public networks.

A.7.12 Cabling security partial match
mitigates

Armoured conduits, electromagnetic shielding and locked enclosures make passive eavesdropping on unencrypted traffic traversing the cables more difficult, mitigating exposure of sensitive data in transit.

References