[NEW] [high] Joomla: Multiple vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities allow a remote attacker to perform cross-site scripting and bypass security mechanisms.

Who is affected

Users of Joomla are affected.

Urgency

Remediation is urgent due to the high severity and potential for exploitation.

Action

Update to the latest version of Joomla.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

high

Published

2026-07-08

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2238

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-489490.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
• Low exploitation riskCVE-2026-489500.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
• Low exploitation riskCVE-2026-489510.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
• Low exploitation riskCVE-2026-489520.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
• Low exploitation riskCVE-2026-489530.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
• Low exploitation riskCVE-2026-489540.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
• Low exploitation riskCVE-2026-489470.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all scored CVEs.
• Low exploitation riskCVE-2026-489480.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.
• Low exploitation riskCVE-2026-489550.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.
• Low exploitation riskCVE-2026-489560.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• unknownMultiple vulnerabilities in Joomla! (July 08, 2026)cert-fr-avis
• highCVE-2026-48958: An improper access check allows unauthorized users to create custom fields via webservices end…nvd
• highCVE-2026-48957: An improper access check allows unauthorized users to access com_privacy datasets.nvd
• mediumCVE-2026-48956: An improper access check allows users to display a list of modules in the frontend.nvd
• mediumCVE-2026-48955: An improper access check allows unauthorized users to access workflow stage and transition inf…nvd
• mediumCVE-2026-48954: Improper validation leads to a generic XSS vector in the language override feature.nvd
• mediumCVE-2026-48953: Lack of escaping leads to an XSS vulnerability in the generic image output layout.nvd
• mediumCVE-2026-48952: Lack of escaping leads to an XSS vulnerability in the update list view of com_installer.nvd
• mediumCVE-2026-48951: Lack of escaping leads to XSS vulnerabilities in modalreturn layouts of various components.nvd
• mediumCVE-2026-48950: Lack of escaping leads to an XSS vulnerability in the file management view of com_templates.nvd
• mediumCVE-2026-48949: Lack of validation leads to an XSS vulnerability in the MFA management views.nvd
• highCVE-2026-48948: An improper access check allows user to download vcard exports of com_contact contacts that ar…nvd

Recent advisories for Joomla

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• unknownCVE-2026-57828: The Joomla extension Phoca Downloads is vulnerable to an authenticated arbitrary file upload t…nvd · 2026-07-11
• unknownCVE-2026-57827: The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that al…nvd · 2026-07-11
• highCVE-2026-56292: A SQLi vulnerability in AcyMailing component < 10.11.1 for Joomla was discovered. Exploiting t…nvd · 2026-07-09
• criticalexploitedCVE-2026-56291: The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload t…nvd · 2026-07-09
• medium[UPDATE] [medium] Joomla: Multiple vulnerabilitiescert-bund · 2026-07-09
• medium[UPDATE] [medium] Joomla: Multiple vulnerabilitiescert-bund · 2026-07-09

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