Security readout for executives and security teams
Plain-English summary
Apache Allura versions before 1.19.1 can mishandle specially crafted input as Git command arguments. A remote, unauthenticated attacker may be able to affect the confidentiality, integrity, and availability of the service. The supplied CVSS score is 9.8, making rapid remediation appropriate.
Executive priority
Treat as an urgent remediation item. Identify exposed Allura systems immediately and upgrade them to 1.19.1 or later. Although active exploitation is not established, the unauthenticated network attack profile and potential full business impact make delayed remediation difficult to justify.
Technical view
CVE-2026-73240 is a CWE-88 argument-injection vulnerability in Apache Allura before 1.19.1. The supplied CVSS 3.1 vector indicates network access, low complexity, no privileges, and no user interaction, with high confidentiality, integrity, and availability impacts. Public sources provided here do not identify the vulnerable endpoints or exact execution consequences.
Likely exposure
Internet-accessible or otherwise untrusted-accessible Apache Allura deployments running versions earlier than 1.19.1 are the primary concern. Exposure depends on whether attackers can reach the affected input path, which the supplied sources do not identify. Version 1.19.1 is reported fixed.
Exploitation context
The supplied record is not in KEV, and no provided source establishes active exploitation or public exploit availability. Exploitation should therefore be treated as unconfirmed, not absent. The network-accessible, unauthenticated CVSS characteristics still justify urgent action.
Researcher notes
The public evidence identifies Git argument injection and CWE-88 but does not name affected parameters, routes, underlying Git options, or demonstrated post-exploitation outcomes. Avoid assuming command execution beyond the stated argument injection and CVSS impacts. Further technical assessment should follow vendor-published details as they become available.
Mitigation direction
- Upgrade Apache Allura to version 1.19.1 or later.
- Prioritize externally reachable and untrusted-accessible Allura deployments.
- Restrict untrusted access until upgrading if immediate remediation is impossible.
- Review the vendor advisory for any additional deployment-specific guidance.
Validation and detection
- Inventory all Apache Allura deployments and determine their exact versions.
- Confirm every deployment reports version 1.19.1 or later after upgrading.
- Identify whether affected deployments are reachable from untrusted networks.
- Review relevant application and Git-operation logs for unexpected activity.
- Verify normal repository operations after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-88: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-73240 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://allura.apache.org/posts/2026-allura-1.19.1.htmlCVE reference, apache
- https://lists.apache.org/thread/10gnxblhomk2z4gxcyyb4t3p4zxsdddvCVE reference, apache · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.