DSA-6427-1 wordpress - security update

unknownpublic exploitCVE-2026-64638

Several vulnerabilities were discovered in wordpress, a web blogging tool, which could result in cross-site scripting, server-side request forgery, privilege escalation or remote code execution. https://security-tracker.debian.org/tracker/DSA-6427-1

CSIRTS triage

vendor: WordPress product: WordPress Cross-site scripting Server-side request forgery Privilege escalation Remote code execution

What: WordPress contains multiple vulnerabilities including cross-site scripting, server-side request forgery, privilege escalation, and remote code execution.
Who is affected: WordPress installations running vulnerable versions that accept user input or allow authenticated access.
Urgency: Critical urgency due to the combination of XSS, SSRF, privilege escalation, and RCE vulnerabilities in a widely-deployed content management system.
Action: Apply Debian security update DSA-6427-1 to upgrade WordPress to the patched version.

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

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Details

Source: Debian Security Advisories (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-08-10
Exploitation: Not in CISA KEV at last sync

Original advisory: https://lists.debian.org/debian-security-announce/2026/msg00338.html

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-2026-646380.89% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 56% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64638	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[NEW] [high] WordPress: Multiple vulnerabilitiescert-bund
unknownWordPress security advisory (AV26-792)cccs
unknownCVE-2026-64638: WordPress is vulnerable to a pre-auth reflected XSS vulnerability on the login screen. Via a s…nvd
unknownMultiple vulnerabilities in WordPress (August 07, 2026)cert-fr-avis