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Apache Allura CVE-2026-81270

| EUVDEUVD-2026-70924 HIGH
Information Exposure (CWE-200)
7.5
CVSS 3.1 · Vendor
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Severity by source

Vendor (CNA) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
7.5 HIGH

Unauthenticated network search leaks private content (C:H); no data modification or service disruption is possible (I:N, A:N).

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (CNA).

CVSS VectorVendor

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

5
Analysis Updated
Sep 04, 2026 - 20:30 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Sep 04, 2026 - 20:22 vuln.today
cvss_changed
CVSS changed
Sep 04, 2026 - 20:22 NVD
7.5 (HIGH)
Analysis Generated
Sep 03, 2026 - 20:18 vuln.today
CVE Published
Sep 03, 2026 - 19:08 oss-security
CRITICAL

Description PRE-NVD

Disclosed via oss-security. NVD scoring and full description are pending.

AnalysisAI

Unauthenticated information exposure in Apache Allura through version 1.20.0 allows remote attackers to retrieve non-public project content via the search functionality, bypassing access controls enforced elsewhere in the application. The search subsystem fails to apply visibility restrictions consistently, meaning private tickets, wiki pages, discussions, or code artifacts indexed by search may be readable without authentication. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires network access to an Apache Allura instance running version 1.20.0 or earlier with the search feature active, which is a core default component requiring no special configuration to enable. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.5 base score is driven by an unauthenticated network-accessible vector (AV:N/AC:L/PR:N/UI:N) with high confidentiality impact-the most alarming combination for an information disclosure flaw, since no foothold, authentication, or user interaction is required. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to Apache Allura 1.21.0, which is the vendor-confirmed fix version per the Apache advisory published at https://seclists.org/oss-sec/2026/q3/646 and the project site https://allura.apache.org/. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all systems running Apache Allura and inventory what confidential data (code, documentation, customer information) is stored in private projects. …

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CVE-2026-81270 vulnerability details – vuln.today

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