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CVE-2026-90910Suited to automated attack · CISA

Apache Answer: Reaction API authorization bypass for restricted content

CVSS score

9.8

EPSS probability

—

Risk score

1.0

Published

13 h ago

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

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Missing Authentication Vulnerability in Apache Answer

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A missing authentication for critical function vulnerability affects Apache Answer through version 2.0.2 [S0]. The reaction API did not enforce content visibility controls [S0]. This allows unauthorized users to read reaction metadata from restricted content or add and remove their own reactions [S0].

Why does it matter?

It poses a security risk by allowing unauthorized individuals to read reaction metadata from restricted content and manage their own reactions [S0].

What should be done?

  • Upgrading the software to version 2.0.3 [S0]
  • Following vendor advisories and updates [S0]
Chain of evidence and sources3 verified claims

Zafiyet, Apache Answer 2.0.2 ve önceki sürümleri etkilemektedir.

S0 · daybreach-canonical

Reaksiyon API'si içerik görünürlük kontrollerini zorunlu kılmamaktadır.

S0 · daybreach-canonical

Kullanıcıların 2.0.3 sürümüne yükseltme yapması önerilmektedir.

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

Missing authentication for critical function vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. The reaction API did not enforce content visibility controls, allowing unauthorized users to read reaction metadata from restricted content or add and remove their own reactions. Users are recommended to upgrade to version 2.0.3, which fixes the issue.

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

CWE: CWE-306

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-2026-90910 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Apache Software FoundationApache Answer 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
9.8CVSS V31CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD
9.8CVSS V3_1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE ADP

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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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-2026-90910 is associated with the following CWEs:

CWE-306: Common Weakness Enumeration Entry CWE-306

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-2026-90910 weaknesses.

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

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://lists.apache.org/thread/bhw80mvmnt9206wyqz80rcbwx1znv1p3vendor-advisoryhttp://www.openwall.com/lists/oss-security/2026/10/16/34nvd

CVSS Vector Radar Chart

9.8 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

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

Follow the vendor

AS
Apache Software Foundation logo
Apache Software Foundation

Weakness Type (CWE & CAPEC)

CWE-306

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