Apache Allura up to 1.19.0 Markdown cross site scripting

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
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3.4$0-$5k2.22+

Summaryinfo

A vulnerability classified as problematic was found in Apache Allura up to 1.19.0. Affected is an unknown function of the component Markdown. Such manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-73237. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Apache Allura up to 1.19.0 and classified as problematic. Affected by this issue is an unknown function of the component Markdown. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

XSS vulnerability in Markdown handling in Apache Allura. This issue affects Apache Allura: from 1.10.0 before 1.19.1. Users are recommended to upgrade to version 1.19.1, which fixes the issue.

The advisory is available at allura.apache.org. This vulnerability is handled as CVE-2026-73237 since 08/11/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/12/2026). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 1.19.1 eliminates this vulnerability.

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Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Allura 1.19.1

Timelineinfo

08/11/2026 CVE reserved
08/12/2026 +1 days Advisory disclosed
08/12/2026 +0 days VulDB entry created
08/12/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: allura.apache.org
Status: Confirmed

CVE: CVE-2026-73237 (🔒)
GCVE (CVE): GCVE-0-2026-73237
GCVE (VulDB): GCVE-100-389102

Entryinfo

Created: 08/12/2026 19:21
Changes: 08/12/2026 19:21 (54)
Complete: 🔍
Cache ID: 216::103

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