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CVE-2026-102899

Sentry: Improper authentication on SAML SSO process allows user identity linking

CVSS score

7.6

EPSS probability

—

Risk score

0.8

Published

18 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.

Impact on My Inventory

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Vulnerability description

CVE AI research

The stored explanation is shown at once; refreshing evaluates the sources again.

DayBreach AI Explanation

Verified against sources

Sentry Advisory: SAML SSO Authentication Vulnerability

Sources read

2

Source agreement

Tam uyum

Evidence confidence

%63

Short explanation

An improper authentication vulnerability exists in Sentry's SAML SSO identity-linking process, allowing attackers controlling a SAML identity provider to take over user accounts.

Why does it matter?

This vulnerability enables attackers to use social engineering to compromise victim accounts and gain unauthorized control over sensitive application monitoring data.

What should be done?

  • Apply the remediation provided for Sentry SaaS
  • Update self-hosted Sentry to version 26.7.2
  • Follow vendor advisories
Chain of evidence and sources2 verified claims

Sentry uygulamasının 26.5.0 ile 26.7.2 sürümleri arasındaki SAML SSO kimlik bağlama süreci uygunsuz kimlik doğrulama zafiyetine sahiptir.

S0 · daybreach-canonicalS1 · cvelist

Saldırgan, sosyal mühendislik yoluyla kurbanı kötü amaçlı bir URL açmaya yönlendirerek kendi kimliğini kurbanın Sentry hesabına bağlayabilir.

S0 · daybreach-canonicalS2 · nvd
Show the technical text from the sources

Sentry is an application monitoring and error tracking platform. From 26.5.0 until 26.7.2, the SAML SSO identity-linking flow allows an attacker who controls a SAML identity provider to socially engineer an authenticated user into opening a malicious URL, link the attacker's identity to the victim's Sentry account, and take control of that account. The attack requires a browser that accepts the cross-site cookie context, including Firefox with SameSite=None cookies or Chromium with third-party cookies enabled. Sentry SaaS received the remediation on July 27, 2026, and self-hosted Sentry is fixed in version 26.7.2.

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

CWE: CWE-287

Explanation produced with the local gemini-flash-lite-latest 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-2026-102899 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1getsentrysentry 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:L/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:L/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-2026-102899 is associated with the following CWEs:

CWE-287: Improper Authentication

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-2026-102899 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://github.com/getsentry/sentry/security/advisories/GHSA-w699-8wff-fqxwvendor-advisoryhttps://github.com/getsentry/sentry/pull/120467vendor-advisoryhttps://github.com/getsentry/sentry/pull/120702vendor-advisoryhttps://github.com/getsentry/sentry/commit/9c982d4bcb81c93e2db552084bcbb45cdd34bdd3vendor-advisoryhttps://github.com/getsentry/sentry/commit/ec963de4ec8c7f340f286c6f613e55458a9e5ddfvendor-advisoryhttps://github.com/getsentry/self-hosted/releases/tag/26.7.2vendor-advisoryhttps://github.com/getsentry/sentry/releases/tag/26.7.2vendor-advisory

CVSS Vector Radar Chart

7.6 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

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

Yama durumu bilinmiyor

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

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Weakness Type (CWE & CAPEC)

CWE-287

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