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CVE-2026-11749

Vulnerability in LY Corporation Armeria

CVSS score

7.6

EPSS probability

—

Risk score

0.8

Published

2 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-11749 – Armeria SAML Bearer Assertion Replay Vulnerability

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%53

Short explanation

Armeria versions prior to 1.41.1 allow replay of SAML bearer assertion IDs within their validity period because one‑time use is not enforced.

Why does it matter?

A successful replay can grant unauthorized access to services that trust the SAML assertion.

What should be done?

  • Monitor vendor advisories for a fix
  • Apply the patch when a fixed version is released
  • Enforce single‑use assertions with additional validation
  • Rotate or invalidate active assertions regularly
  • Restrict network access to SAML endpoints
  • Consider alternative SAML libraries with proper one‑time enforcement
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

Armeria 1.41.1 öncesi sürümler, bearer assertion’ların tek seferlik kullanılmasını zorunlu kılmaz; bu da tekrar saldırılarına yol açar.

S0 · daybreach-canonicalS1 · cvelist

Yama durumu UNKNOWN olarak raporlanmıştır; resmi kaynaklarda kesin bir düzeltme sürümü doğrulanmamıştır.

S0 · daybreach-canonical

Bu istismar CVSS tabanı 7.6 ve HIGH şiddet seviyesine sahiptir.

S0 · daybreach-canonical
Show the technical text from the sources

A vulnerability has been identified in armeria-saml prior to 1.41.1, where bearer assertions are not enforced for one-time use, allowing replay of previously consumed assertion IDs within their validity period.

CVSS vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CWE: CWE-294

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-11749 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1LY CorporationArmeria View
Total affected vendors: 1|Products: 1

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.

SCOREVERSIONSEVERITYVECTORSOURCE
7.6CVSS V40HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD
7.6CVSS V4_0HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NCVE CNA

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-2026-11749 is associated with the following CWEs:

CWE-294: Common Weakness Enumeration Entry CWE-294

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-2026-11749 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
User—

Official Sources and Advisories

https://line.github.io/security-advisory-blog/CVE-2026-11749/vendor-advisoryhttps://github.com/line/armeria/security/advisories/GHSA-v86g-h7gx-q845vendor-advisory

CVSS Vector Radar Chart

7.6 / 10
Attack VectorNetworkComplexityHighPrivilegesNoneUser Interact.RequiredConfidentialityHighIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone required
User InteractionP
Confidentiality (Gizlilik)High
Integrity (Bütünlük)P
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

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

Follow the vendor

LC
LY Corporation logo
LY Corporation

Weakness Type (CWE & CAPEC)

CWE-294

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CVE-2026-11749 · Vulnerability in LY Corporation Armeria