[NEW] [medium] Apache Tomcat: Multiple vulnerabilities

mediumCVE-2026-59083 CVE-2026-59084

A remote, anonymous attacker can exploit multiple vulnerabilities in Apache Tomcat to bypass security measures and disclose information.

CSIRTS triage

vendor: Apache product: TomcatOther

What: Multiple vulnerabilities in Apache Tomcat can be exploited by a remote, anonymous attacker to bypass security measures and disclose information.
Who is affected: All deployments of Apache Tomcat are affected.
Urgency: Remediation is medium urgency as the vulnerabilities can be exploited anonymously.
Action: Users should apply the latest security updates for Apache Tomcat.

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

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-08-06
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-2026-2310

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-2026-590830.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-590840.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59083	coverage & exploitation status	NVD · CVE.org
CVE-2026-59084	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownexploitedMultiples vulnérabilités dans les produits IBM (28 août 2026)cert-fr-avis
unknownNCSC-2026-0309 [1.00] [M/H] Vulnerabilities resolved in Oracle Communicationsncsc-nl
high[NEW] [HIGH] Oracle Communications: Multiple Vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Apache Tomcat (July 15, 2026)cert-fr-avis
criticalCVE-2026-59084: Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to …nvd
criticalCVE-2026-59083: Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valv…nvd

Recent advisories for Apache Tomcat

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.

highexploited[UPDATE] [hoch] Apache Tomcat und Tomcat Native: Mehrere Schwachstellencert-bund · 2026-09-04
high[UPDATE] [hoch] Apache Tomcat: Mehrere Schwachstellencert-bund · 2026-09-04
high[UPDATE] [high] Apache Tomcat and Tomcat Native: Multiple vulnerabilitiescert-bund · 2026-09-02
medium[UPDATE] [medium] Apache Tomcat: Multiple vulnerabilitiescert-bund · 2026-09-01
high[UPDATE] [high] Apache Tomcat: Multiple vulnerabilitiescert-bund · 2026-09-01
criticalGHSA-h3x4-894j-xpx5: Apache Tomcat's FORM authentication process has an Incorrect Authorization vulnerabilityghsa · 2026-08-26