CVE-2026-65583Suited to automated attack · CISA

Apache CXF: Self-issued ID token claims validation skipped

CVSS score

9.1

EPSS probability

%0.3

Risk score

0.0

Published

2 mo ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Apache CXF OIDC Token Validation Flaw Allows Authentication Bypass

Sources read

Source agreement

Tam uyum

Evidence confidence

%58

Short explanation

Apache CXF's OIDC token validation fails to enforce claim checks for self-issued tokens, enabling authentication bypass. Vulnerable versions are below 4.2.3, 4.1.8, and 3.6.12. No CVSS score. Patch status is UNKNOWN. No active exploitation reported by CISA.

Why does it matter?

Attackers can bypass authentication using crafted tokens, leading to unauthorized access. The flaw affects widely used Apache CXF components. Patch availability is confirmed via vendor advisories. No active exploitation reported by CISA.

What should be done?

Upgrade to Apache CXF 4.2.3, 4.1.8, or 3.6.12
Verify patch status via vendor advisories
Do not use versions prior to 4.2.3, 4.1.8, or 3.6.12

Note on uncertainty

The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.

Chain of evidence and sources3 verified claims

Apache CXF'nin OIDC güvenilir taraf token doğrulama, gerekli claim kontrolünü uygulamadan kendi çıkarılmış ID token'ları kabul edebilir. Bu, önceden tanımlanmamış token'larla kimlik doğrulama atlamasına neden olabilir. Varsayılan olarak kendi çıkarılmış token'lar kabul edilmez. Kullanıcılar 4.2.3, 4.1.8 veya 3.6.12 sürümlerine güncellenmesi önerilir.

S0 · daybreach-canonical

Açık, Apache CXF 4.2.3, 4.1.8 ve 3.6.12'ye kadar olan sürümlerde mevcuttur. CVSS puanı veya ciddiyet bilgisi verilmemiştir. Yama durumu, mevcut kanıtla bilinemez.

S0 · daybreach-canonical

CISA KEV'ye göre aktif istismar yapılmamıştır. Publik PoC veya istismar belirtilmemiştir. Düzeltme, belirtilen sürümlerde üretici bildirimleri takip edilerek sağlanabilir.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

Apache CXF’s OIDC relying-party token validation could accept self-issued ID tokens without enforcing required claim checks (issuer/subject/audience/time and sub_jwk binding), enabling authentication bypass with crafted tokens. However, note that self-issued ID tokens are not accepted by default in the validator. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fixes this issue.

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

CWE: CWE-345

Explanation produced with the local qwen3:4b-instruct model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-65583 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	Apache Software Foundation	Apache CXF	View
2	apache	cxf	View
3	apache	cxf	View
4	apache	cxf	View

Total affected vendors: 2|Products: 4

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
9.1	CVSS V3_1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	CVE ADP
9.1	CVSS V31	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-65583 is associated with the following CWEs:

CWE-345: Common Weakness Enumeration Entry CWE-345

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-65583 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

https://lists.apache.org/thread/fzj8yzgfl53gclxrcdrnrx3grcpkq51jvendor-advisory http://www.openwall.com/lists/oss-security/2026/08/06/23nvd

CVSS Vector Radar Chart

9.1 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

Apache Software Foundation

apache

Weakness Type (CWE & CAPEC)

CWE-345

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